9 Behind-the-Scenes Secrets of Haunted Houses

iStock.com/quavondo
iStock.com/quavondo

Margee Kerr leads a unique double life. By day, she teaches sociology at the University of Pittsburgh. By night, she works for ScareHouse, a renowned haunted house in Pittsburgh, where she analyzes data from customers and employees to make the attractions as terrifying as possible.

Kerr’s new book Scream: Chilling Adventures in the Science of Fear explores how fear works in our bodies and societies, and why many of us intentionally seek it out—especially at this time of year. We interviewed her and several other professionals working at haunted house attractions to find out more about how these places work, and why we love them like we do.

1. FEAR IS SUBJECT TO TRENDS.

Just like Halloween costumes, haunted house characterscycle in and out of popularity. Since 2008, Kerr has been asking ScareHouse visitors to rate which types of characters they find most frightening, whether it’s zombies, ghosts, witches, demons, serial killers, or other nightmares stalking the house's halls.

Kerr says that when she first started the interviews she saw a rising fear of zombies, a trend that has yet to entirely fade. But the characters scoring the highest on questionnaires this season are ones that seem plucked from recent American Horror Story storylines: circus sideshow oddities dripping with nostalgia, face-paint, and worse.

Kerr says movie serial killers like Jason and Freddy are still popular, even with kids who were born long after the franchises got their start. Other perennialfavoritesinclude creepy kids and creepy dolls. (Although people are only scared of porcelain dolls, Kerr notes, never stuffed animals or Raggedy Ann types. She blames that on the uncanny valley effect.) Ghosts, Kerr says,never seem to get to the very top of the rankings.

Amy Hollaman, Creative Director at Terror Behind the Walls at Eastern State Penitentiary, says they’ve found that their scariest characters are the ones people can’t quite interpret. “We have a kind of cult that has taken over a ‘haunted machine shop,'" she explains. "They all have shaved heads, workers uniforms, and the same tattoo. It’s not a character that everyone is familiar with, so people are trying to constantly assess it—is this threatening? Can I trust this? We find that people think that’s very scary."

2. PROGRESSION IS KEY.

Well-designed haunted houses will take into account the entire flow of the experience, much like a symphony—or even just a good workout.

Several haunted house experts noted the importance of starting out strong. Hollaman says they used to have a slower warm-up sequence at the start of their experience, but visitors didn’t remember it. Today, they go straight for the high intensity, high-startle scares and then get further into the story.

Ben Armstrong, co-owner of NetherworldHaunted Housein Atlanta, Georgia,agrees:“You always want to hit them hard at the beginning and hard at the end."

Kerr confirms that starting out with high intensity is important. At ScareHouse, she says, the initial attractions are designed to get your body in a state of high arousal. They “activate the threat response and get the chemicals flowing,” she notes. “Startle scares”—think a zombie jumping out from the corner—accomplish this effectively. The startle response is hard to shut off, Kerr says, and it gets you into high-alert mode.

ScareHouse, like other haunted houses, employs a series of peaks and valleys as visitors wander through the attraction. Their final room ends on a comedic note, one that tries to leave visitors “laughing, pumped-up, and excited.” There'salso acool-down at the end, where visitors check out their belongings, and staff ask how they’re doing. But Kerr notes that not all haunted houses pay attention to the winding-down part of experience. The ones that do tend to be more business-oriented—they’re concerned about the liability issues of sending terrified people off into the night.

3. SOME OF THE CHEAPEST TRICKS ARE THE MOST EFFECTIVE.

“There are a lot of old-school hack tricks that haunters discovered and now science is confirming,” Kerr says.

Many of these have to do with altering visitors’ sense of space and time. Strobe lights induce what Kerr calls "a feeling of depersonalization" by messing with our proprioception—our sense of our own bodies and movement—and our ability to locate ourselves visually from one moment to the next. Blackout rooms also interfere with our ability to orient ourselves, which triggers a fear response.

Other tricks involve subtle movements. At ScareHouse, some of the walls are on springs and move when you lean against them—not enough to make visitors fall and hurt themselves, Kerr says, but enough to make you question what just happened. Golf balls wedged tightly underneath the floors are another classic trick, since they make the ground move just enough to be alarming. "If you put the golf balls really close together in a very tight space and then put a board on top of it (also secured), so there is only about a half an inch worth of movement, it creates just enough disorientation to put you off balance (and set up you for the next scare), but not enough to actually make you fall," Kerr explains.

Still, startles remain one of the most effective tools. “Startles might be cheap, but they’re required to keep that high level of arousal,” Kerr says. “You can have great sets, but you need to have these fundamental things in your pocket to create that feeling of chaos. Otherwise you’re just walking through really cool sets.”

4. DON’T GET TOO COMFORTABLE.

“I always look for ways to establish a pattern or rhythm,”Elizabeth Harper, an LA-based lighting designer who’s worked on several horror-themed attractions, says. “If you subvert the pattern, the audience has a moment of relief where they feel like they've escaped unscathed—and that's your opportunity to really scare them.”

It's a pattern that's often used in horror movies. “The killer's theme music will prime you to get scared," she explains. "Then one time it turns out to be something normal—it was only the wind or a cat ... you can bet that right after that moment of relief they're going to unleash something terrifying.”

Hollaman uses similar tactics in what she calls her “scareography”—the choreography of a scare. “It’s a sequence of steps, like with a dance move,” she explains, and one that incorporates both physical movements and dialogue. The principles of Hollaman’s scareography includes first scanning the customer and getting a read on their body language, which can determine the sequence or the tempo of what happens next. The second step often involves a distraction, often with a prop.

“For instance, in the morgue, visitors see a rib cage slowly lifting up,” she explains. “While they’re turned and looking at that, it allows the actors to slowly creep out of their scare pockets and slide right to the middle of the group.” That’s when the real scare happens.

“We’re using the principles of redirection,” she notes. "The scare isn’t where you expect it to be.”

5. THAT SMELL MIGHT JUST BE ANIMAL URINE.

Entire companies are devoted to designing haunted house smellscapes, withthe scent of rotting corpses a particularly popular choice.

ScareHouse has used a variety of scents, Kerr says, but this year there’s a boar’s urine smell in a haunt designed to look like a butcher room. “It’s awful, but in a way that isn’t completely repulsive,” Kerr says.

Finding the right balance between scary and just plain disgusting is important when it comes to smells. “Something like bad breath is just going to make people disengage and move away," Kerr says. "But there’s other smells that are weird and gross, yet that don’t take you out of the experience.” Boars’ urine seems to fit the bill, for some reason—perhaps because most of us have never encountered it before and don’t have a script for how to deal with it, Kerr says.

Harper, however, says she’s not a fan of using smell in a haunted house, and “not just because the smell gets in your clothes and hair if you're working all night.” She says the unfamiliar smells can actually take people out of the moment. “Unlike sound or lights or actors, you can't hit someone with a smell and make it disappear, so it overstays its welcome. People start wondering how we did that, which is the least scary thought in the world.”

6. THE SCARES MAY CHANGE ACCORDING TO YOUR RESPONSE.

At ScareHouse, “if a group comes in that’s not jumping at all, the actors will abandon any dialogue and go right to startle scares,” Kerr says. In other words, plot goes out the window, while the basic physiological triggers come back into play.

On the other hand, if people who seem too scared, the actors will take it in a more comedic direction. Armstrong at Netherworld agrees: “If someone is too scared we train our actors to back off … We want them to have nightmares for a week, not the rest of their lives!”

According to general manager D. Brandon LeJeune, the goal at House of Torment in Austin is "to scare first and foremost, but when that doesn't work out, we fall back to entertaining. Groups are instructed before entering the attraction that if they are too scared to continue, they can inform a monster and they will be escorted out. This happens on a very regular basis.”

Hollaman, however, says her actors aren’t supposed to improv very much. They might have to make some of their scares shorter or longer, but basically need to stick to the script.

7. SIMPLE IS BETTER.

Not every scary setup works. Around 2009, ScareHouse created a haunted house built around a detailed universe with good soldiers fighting an evil overlord. Visitors were supposed to be able to choose sides, but people didn’t get it.

“The complexity of the story didn’t allow people to go into primal, no-thinking scare mode. That was a lesson in how simple is better—narrative thread good, narrative cobwebs bad,” Kerr says. Or as Harper puts it, “a little bit of narrative goes a long way."

8. THEY PRODUCE A NATURAL HIGH.

Kerr says there can be surprising benefits to visiting a haunted house. For some, they induce a kind of natural high. “The adrenaline, the dopamine, the endorphins that course through your body—the scary material is just a trigger for that kind of response with some people,” Kerr says.

Others seem to enjoy haunted houses because they genuinely like scary material. “Some people have a positive response to a negative picture,” Kerr explains, “and there’s not necessarily a pathology behind that.” The reasons behind such responses are complex. “It could be because some people have linked scary stuff with the feel-good endorphins, so the negative image takes on a positive feeling.”

And some people, like Kerr herself, go to haunted houses as a way to enforce feelings of competency. Going through a set of thrilling experiences can be a safe way to challenge oneself and emerge feeling great. “It’s a confidence boost,” Kerr says. She actively seeks out safe-but-scary experiences on days when she’s feeling low.

9. THEY MAY GET US CLOSER TO OUR ANCESTORS.

Humans evolved in environments in which they were facing constant physical threat. For a lot of us, life is significantly more cushy now. That could mean we’re missing out on dangerous but potentially exhilarating experiences our ancestors were more familiar with, whether that’s running from a bear or fighting a battle.

“For many Americans, their emotional expressions on a day-to-day basis are very narrow,” Kerr says. “We’re not having many highs or lows. We’re living a more restricted emotional life. I think that’s why we go out to scary movies and haunted houses—we evolved to have this massive range of emotional experiences, and we still want them." In other words, haunted houses might just be a way to recapture the sense of thrill our foremothers and forefathers knew—but instead of ending up as a snack for a wild animal, we can go off laughing into the night.

11 Secrets of Storm Chasers

Drew Angerer, Getty Images
Drew Angerer, Getty Images

Every year, people around the world board up windows, stock up on essential supplies, and flee their own homes in anticipation of severe weather events. But for storm chasers, tumultuous weather is an invitation to move toward the danger. Some endure precarious conditions during hurricanes, tornadoes, and other storms in order to take readings that might later prove useful to meteorologists. Others are simply attracted to the beauty of the storms, capturing nature’s violent expressions in what could be considered an extreme form of landscape photography.

There's no shortage of opportunities for storm chasers. The U.S. each year sees an average of 1253 tornadoes—a massive column of spinning air borne out of thunderstorms and creating winds up to 250 miles per hour. Hurricanes are fueled by heat from oceans and threaten coastal regions with heavy rain and wind. Though it doesn’t have quite the same reputation, even a simple, raging thunderstorm can produce enough hail and high winds to cause chaos. Each is dangerous, devastating—and, in the eyes of storm chasers, beautiful.

To better understand what motivates these individuals to seek out cataclysmic events, Mental Floss spoke to three extreme weather specialists. Here’s what they had to say about airborne houses, armored trucks, and why you won’t usually see any of them wearing a helmet.

1. For storm chasers, a hurricane can feel like an acid trip.

A satellite image of Hurricane Irene in the Caribbean Sea in August 2011 is pictured
Hurricane Irene is shown over the Caribbean Sea in a satellite image from August 2011.
NOAA via Getty Images

With just 13 hurricanes hitting the continental U.S. since 2010, chasing hurricanes requires a passport and a willingness to spend days making connecting flights to international destinations. As a result, hurricane hunters are a small subgroup of the storm chaser demographic. Why do they do it? For Josh Morgerman, a hurricane chaser based in Southern California and star of the Science Channel’s upcoming Hurricane Man, being exposed to hurricanes on Long Island in his youth created an association between a severe storm and excitement. “My whole life is hunting that feeling again and again,” he tells Mental Floss. While he still pursues that rush, Morgerman's chief objective is to measure air pressure and log observational data that can assist meteorologists in analyzing storms. (Chasers can also measure factors like humidity, wind speed, and temperature.)

Unlike tornadoes, which have a very clear visual identity as they spin in a cone shape over land, hurricanes just look like a fierce concentration of weather. That combination of heavy rain, wind, and flying debris can be hard to explain unless you’ve experienced it firsthand. As fierce weather rages in the area known as the eyewall, the eye, or center, inside is peaceful. Morgerman says that jarring contrast is a little like an acid trip. “In a severe hurricane [the eyewall] is quite incredible,” he says. “Some sound like a train or like wolves howling. Hurricane Michael, the building I was in was shaking. The windows were breaking. With storms like that, you can’t see anything. Everything just turns white. You just see flying wreckage. It’s an unbelievable spectacle to behold." In the eye, though, "It gets calm. The sky is blue ... There’s something very acid-trippy about that.”

2. The movie Twister influenced a lot of storm chasers.

A publicity photo from the 1996 film 'Twister' depicts actor Bill Paxton looking at a tornado
Hulton Archive/Getty Images

In 1996’s Twister, Bill Paxton plays a tornado chaser who braves a series of severe weather events. For many chasers, the movie was a milestone, prompting a lot of people to get into the field themselves. “It’s the reason I got into it,” says tornado chaser Greg Johnson, who now collects footage to sell to news outlets. “There was this romantic notion of storm chasing. There are a lot of things the movie got right."

There was one exception. "One thing it didn’t get right is the human toll. The damage associated with these storms. The movie underplayed the destruction and death. In real life scenarios, it’s far worse than anything they show in the movie.” A chaser’s first priority, he says, is to stop and help anyone who might need assistance.

3. Storm chasers don’t spend much time actually inside the storms.

Support scientist Tim Marshall stands outside of a vehicle to observe a supercell thunderstorm in Lamb County, Texas in May 2017
Drew Angerer, Getty Images

The life of any storm chaser is supposed to be thrilling, and it is—for a few minutes or hours at a time. Most chasers spent the majority of their careers traveling toward a storm, either by driving toward it or, in Morgerman’s case, flying. He might be in a hurricane for hours; a tornado might touch down for just a few minutes. Johnson also says he spends much of his time traveling. “When you see videos on YouTube of incredible tornado events, recognize what you’re seeing is the 1 percent of the time,” Johnson tells Mental Floss. “You’re not seeing countless hours at truck stops sleeping on the hood of a truck doing nothing.”

4. The real danger for storm chasers isn’t the weather. It’s the traffic.

Traffic is redirected during a tornado in Linwood, Kansas in May 2019
Kyle Rivas, Getty Images

Severe weather can cause high winds and flooding, but it’s not always nature that winds up being physically threatening, especially because chasers spend so much of their time traveling. (In fact, there’s been only one fatal incident as a direct result of a tornado, when chaser Tim Samaras, his son Paul, and colleague Carl Young were trapped in their vehicle and picked up by 200 mile-per-hour winds during the El Reno tornado in 2013. All three died.)

According to Montana-based storm chaser and National Weather Service meteorologist Cory Mottice, experienced chasers know to fear traffic more than the weather. “In a more highly populated area, you have to worry about traffic congestion,” he says. “A storm might be coming down through Oklahoma and you might be out of danger initially. But as the storm is getting closer, people are worrying and start panicking. They’ll pull under overpasses and get stuck on the road with a tornado coming at them.”

Johnson agrees, adding that injury from storms can often take a back seat to traffic accidents. “The thing that keeps me up at night is the driving, not the tornado,” he says. “The tornado will generally go from point A to point B along a defined path. It’s very well-behaved. The quickest way is a straight line. It’s very visual. You can see where it is and you can avoid it. Driving is a completely different story. Put enough miles on and you’re bound to see a bad accident.”

5. Storm chasers drive armored vehicles.

A reinforced vehicle is pictured near a tornado
Courtesy of Greg Johnson // @tornadogreg, TornadoHunter.com

Driving in pursuit of a tornado requires a little more than simple guts and a willingness to get close to a massively powerful weather event. Chasers need their version of a Batmobile. According to Johnson, professionals usually opt for an armored truck to help insulate them from the destructive power of the storm. “We’re not just driving around in a pick-up truck,” he says. “I have a roll cage to prevent it from being crushed. It’s designed to go off-road. It’s heavier than a normal truck. The steel roll cage adds weight. There’s exterior coating to prevent punctures in the vehicle.”

While the roll cage is heavy, the goal isn’t to make the vehicle heavier so it's harder for a tornado to pick up. “At the end of the day, if you’re caught in a tornado capable of throwing the vehicle, a weight difference of 500 or 800 pounds won’t matter. Tornados can pick up combiners. Those things do happen. I’d rather the truck be lighter and easier on gas.”

6. Storm chasers have seen flying houses.

A weathervane is mounted on the roof of a house
Lobro78/iStock via Getty Images

Storm chasers don’t want to drive directly into a tornado or other severe weather event. They just want to get close enough to obtain readings or to take photographs. Johnson tries to get within 200 or 300 yards to snap photos, which is still close enough to see how intense wind speeds can be. “I’ve seen a house flying through the air,” he says. “I saw a truck flying across the road 50 yards in front of me.”

7. Storm chaser equipment can take a beating.

Jan Dutton of WeatherBug.com tracks Hurricane Isabel in Ocean City, Maryland in September 2003
Mark Wilson, Getty Images

Most chasers hit the road with doppler radar, laptops, cameras, and other equipment to help them analyze data and capture images. If you’ve wondered how they can do that without putting themselves at risk, the answer is simple. For still photography, Mottice puts the camera on a tripod outside while he remains in the truck. That keeps him out of danger—but his equipment is another story. "I have my camera and gear on a tripod. I’m in the vehicle taking remote pictures. The hail can hit the camera. Wind is an issue.” Some chasers bring back-up equipment in case their gear gets pummeled.

8. Storm chasers know they should wear helmets. (But they usually don’t.)

A storm warning sign is pictured
arcady_31/iStock via Getty Images

With flying wreckage cutting through the air, it would stand to reason storm chasers should equip themselves with helmets. Few do, however. “I’m embarrassed to say I don’t wear a helmet,” Morgerman says. “Fans have been pushing me to wear one for years … the whole [television] crew is wearing helmets. I don’t want anything to encumber the experience.”

9. Storm chasers can suffer physical effects.

Hurricane Ike is seen over Cuba in a photo taken by the International Space Station in September 2008
Hurricane Ike is seen over Cuba in a satellite image taken by the International Space Station in September 2008.
NASA via Getty Images

An experienced chaser knows how to plan routes that keep them safely away from tornadoes. For hurricanes, they scope out buildings able to withstand the force of the storm. All that planning, however, doesn’t mean they always walk away unscathed. Morgerman says the violent winds of a hurricane’s eyewall can leave enduring effects. “The intense gustiness can cause rapid pressure changes that can really hurt your ears,” he says.

10. Storm chasers know that thunderstorms can be incredibly destructive.

A storm chaser drives a car with a smashed windshield
Courtesy of Greg Johnson // @tornadogreg, TornadoHunter.com

Most people assume hurricanes and tornadoes represent the pinnacle of danger when it comes to storm-chasing. But according to Mottice, a severe thunderstorm can match or exceed them in destructive power. “Some people think a severe thunderstorm warning with 80 mile-per-hour winds is no big deal, that the tornado is the big deal,” he says. “But winds produce more damage than some tornadoes. In Montana, a storm produced 120 mile-per-hour winds. They can do a lot of damage.”

Mottice also tends to be wary of hail during storms. Once, he says, “I didn’t know a storm was blowing up behind the one we were chasing. We got caught in the core of that one. It threw golf ball-sized hail on us. The vehicles on the roads had broken windows.”

11. Storm chasers worry they might be setting a bad example for amateurs.

Hunter Anderson, a meteorology student at St. Cloud University, films a storm near Limon, Colorado in May 2017
Drew Angerer, Getty Images

In the storm-chasing community, there’s much debate over what separates a professional from an amateur. Generally speaking, professional storm chasers get paid for their work, whether that be compensation for footage or photography. But there's no licensing necessary to chase a storm, and anyone can pursue extreme weather. Morgerman, who has likely been in more hurricanes than anyone alive—he says the Science Channel verified the claim for his television series—believes amateurs who follow chasers on social media might get the wrong idea. “I remember being a 15-year-old weather nerd wanting to have these experiences. I worry I’m setting a bad example. I worry some kids will watch what I do and try to do it but without the experience and knowledge that I have.”

12 Secrets of Roller Coaster Designers

People ride a spinning roller coaster in the Santa Cruz Beach Boardwalk Park
People ride a spinning roller coaster in the Santa Cruz Beach Boardwalk Park
hanusst/iStock via Getty Images

Back in the early 20th century, engineers attempting to push the limits of roller coaster thrills subjected riders to risky upside-down turns and bloody noses. A century later, coaster designers rely on computer software, physics, and psychology to push the limits of the roughly 5000 rides in operation worldwide. To get a sense of what their job entails, Mental Floss spoke with several roller coaster specialists about everything from testing rides with water-filled dummies to how something as simple as paint can influence a coaster experience. Here’s what we learned.

1. Getting strapped in might be the most exciting part of the roller coaster ride.

Known as a “thrill engineer,” UK-based Brendan Walker consults with coaster manufacturers and parks on the psychology of riding the rails. In his experience, riders getting secured into their seats are at the peak of their excitement—even more so than during the ride itself. “The moment the lap bar is being locked down and you have that feeling of things being inescapable, that you have to suffer the effects of the ride, is the highest moment of arousal,” Walker says. “The actual ride might only achieve 80 percent of that excitement.”

2. Designers test roller coasters with water-filled dummies.

Bill Kitchen, founder of U.S. Thrill Rides, says it can take anywhere from two to five years for a coaster to go from idea to execution. Part of that process is devoted to the logistics of securing patents and permits for local site construction—the rest is extensive safety testing. “We’re subject to ASTM [American Society for Testing Materials] standards,” Kitchen says. “It covers every aspect of coasters. The rides are tested with what we call water dummies, or sometimes sandbags.”

The inanimate patrons allow designers to figure out how a coaster will react to the constant use and rider weight of a highly trafficked ride. The water dummies—which look a bit like crash test dummies, but filled with water—can be emptied or filled to simulate different weight capacities. Designers also sometimes use the kind of crash-test dummies found in the auto industry to observe any potential issues prior to actual humans climbing aboard.

3. Every foot of roller coaster track costs a lot of money.

Thrill seekers go upside-down while riding on the Mind Eraser roller coaster in Agawam, Massachusetts
Thrill seekers go upside-down while riding on the Mind Eraser roller coaster in Agawam, Massachusetts
Kirkikis/iStock via Getty Images

There is absolutely nothing random about the length of a coaster’s track. In addition to designing a ride based on the topography of a park site, designers take into account exactly how much space they’ll need to terrorize you and not an inch more. When England’s Alton Towers park was preparing to build a ride named TH13TEEN for a 2010 opening, they asked Walker exactly how much of a drop was needed to scare someone in the dark. “It was a practical question,” Walker says. “For every extra foot of steelwork, it would have cost them £30,000 [roughly $40,000].”

4. Rollercoaster Tycoon brought a lot of people into the business.

The popular PC game, first released in 1999, allowed users to methodically construct their own amusement parks, including the rides. As a proving ground for aspiring engineers and designers, it worked pretty well. Jeff Pike, President of Skyline Attractions, says he’s seen several people grow passionate about the industry as a direct result of the game. “I remember when the game first got popular, I would go to trade shows and there would be kids looking to get into it using screen shots of rides they designed. The game definitely brought a lot of people into the fold.”

5. Paint makes a big difference in coaster speed.

A group of tin metal cans with colorful paint
scanrail/iStock via Getty Images

For all of their high-tech design—the software, fabrication, and precise measures of energy—a good coaster ride can often come down to whether it’s got too much paint on it. “The one thing that will slow down a steel coaster is a build-up of paint on the track rails,” Pike says. “It softens where the wheel is rolling and hitting the track, which increases the drag.” A good, worn-in track will have gray or silver streaks where the wheel has worn down the paint, making it move more quickly.

6. A roller coaster’s skyline is key.

Brian Morrow, former Corporate Vice President for Theme Park Experience at SeaWorld Parks and Entertainment, says that the looming curvature of coasters spotted as guests drive toward and enter the park is very purposeful. “It’s like a movie trailer in that we want you to see some iconic coaster elements, but not the whole thing,” he says. “You approach it with anticipation.”

7. Some coasters arrive as giant model kits.

Whether a coaster’s theme or design comes first is largely left up to the end user—the amusement park. But for some rides, manufacturers are able to offer pre-fabricated constructions that designers can treat like the world’s biggest Erector Set. “Sometimes I work on rides that have already been built,” Walker says. “They’re produced by a company and presented almost like a kit with parts, like a model train set. There’s a curve here, a straight bit here, and you can pick your own layout depending on the lay of the land.”

8. Wooden roller coasters are weather-sensitive.

If you’ve ever been on a wooden coaster that seems a little shaky from one trip to the next, check the forecast: It might be because of the weather. Pike says that humidity and other factors can shrink the wood, affecting how bolts fit and leading to a slightly shakier experience. “The structure itself can flex back and forth,” he says. It’s still perfectly safe—it just takes more maintenance to make sure the wood and fasteners are in proper operating condition. A well-cared-for wooden coaster, Pike says, can usually outlast a steel model.

9. The time of day can affect the coaster experience.

“A coaster running in the morning could run slower when cooler,” Morrow says. “The wheels are not as warm, the bearings are warming up. That could be different by 2 p.m., with a slicked-up wheel chassis.” Coasters experiencing their first-ever test runs can also be slightly unpredictable, according to Pike. "Those first trial runs [during the testing phase] can be slow because everything is just so tight," he says. "A lot of coasters don't even make it around the track. It's not a failure. It's just super-slow."

10. Roller coaster designs can come from unusual places—like Jay Leno’s chin.

The twisting, undulating tracks of coasters can often be the result of necessity: Pike says that trees, underground piping, and available real estate all inform designers when it comes to placing a ride in a specific park. But when they have more freedom, coasters can sometimes take on the distinctive shape of whatever happens to be around the designers at the time of conception. “We had a giant piece of land in Holland that just had no constraints, and we were sitting around talking," Pike says. “And we started talking about Jay Leno’s chin.” The ride was a “loose” representation of the comedian's jaw, but “it is there.”

11. Roller coaster riders double as performers.

A woman taking a ride on a rollercoaster at Oktoberfest in Munich, Germany
A woman taking a ride on a rollercoaster at Oktoberfest in Munich, Germany
exithamster/iStock via Getty Images

For Walker, the best advertising for a coaster is having spectators watch riders de-board after an exhilarating experience. “It’s all about that emotion,” he says. “A spectator basically asks, ‘What’s making them so aroused? What’s giving them such pleasure?’ The line for the ride is the audience. Imagining yourself on the structure becomes a very powerful thing."

12. The future of coasters is vertical.

Biggest, fastest, longest—coasters are running out of superlatives. Because rides can only be designed with so many drips, rolls, or G forces, some companies are looking to the sky for their next big idea. Kitchen has been overseeing design of the Polercoaster for years: It’s a sprawling, skyscraper-esque ride that uses electromagnetic propulsion to carry riders upwards instead of across horizontal tracks. “We want to put it in places where land is very expensive, like the Vegas strip,” he says. “You can only do that if it takes up a lot less space.” The project is set to exceed the 456 feet of the current tallest ride, Kingda Ka at Six Flags in New Jersey. “It’ll be the world’s tallest—and hopefully the most fun.”

This list first ran in 2017.

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