This haunted house in Canada takes photos of people's reactions to getting scared -- and it's hilarious

04 15 16 pic0057Nightmares Fear FactoryTwo people scared out of their minds inside Nightmares Fear Factory

Nightmares Fear Factory, in Niagara Falls, Canada, is in the perfect location for a haunted house: a former coffin factory.

It’s known not only for supposedly being one of the world’s scariest haunted house experiences, but also for the reactions they capture on three cameras hidden inside.

It’s completely dark inside the haunted house, but the flash of the camera illuminates some pretty hilarious faces.

Nightmares has kindly shared those images with Business Insider.

According to Nightmares, the legend behind the haunted house is a classic ghost story.

Nightmares Fear Factory

Abraham Mortimer owned the Cataract Coffin Factory and was routinely tormented by local kids who said he was 'eccentric.'

Nightmares Fear Factory

It was all in good fun until one fateful night, when during a struggle between Mortimer and more 'hooligans,' Mortimer was supposedly crushed to death by empty coffins.

Nightmares Fear Factory

While his tormenters escaped, never to be found, Mortimer's own coffin was found empty after his funeral. Legend has it he's been lurking the halls of his shuttered coffin factory ever since.

Nightmares Fear Factory

Not everyone makes it all the way through. According to Nightmares, more than 135,000 people have chickened out during their experience, which reportedly only lasts 10 to 15 minutes.

Nightmares Fear Factory

Survivors of Nightmares have similar things to say about the attraction, including survivor Deanna Lynn, who reviewed her experience on their website: 'I pretty much sh*t my pants, no big deal.'

Nightmares Fear Factory

We got the scoop on how these images are taken inside the factory.

Nightmares Fear Factory

There are a total of three cameras inside. Two are still cameras, and one is for video.

Nightmares Fear Factory

Nightmares doesn't rely on the usual blood-and-gore haunted house stunts.

Nightmares Fear Factory

Live actors are inside the factory creating a unique experience for each visitor. While reactions vary, they are all a product of absolute horror.

Nightmares Fear Factory

It is pitch black inside the factory -- you can't even see your hand in front of your face.

Nightmares Fear Factory

Throughout the tour, you follow a trail of red lights for as long as you're able.

Nightmares Fear Factory

During one part of the tour, you must physically hang on to the group you're with in order to find your way through. It's at this moment that the images are taken.

Nightmares Fear Factory

It's not advised to go alone.

Nightmares Fear Factory

For those who just can't take it, saying the code word 'Nightmares!' will get you pulled out before the end.

Nightmares Fear Factory

Open for more than 30 years, the factory has become more popular since it began making these reactions shots available to the public.

Nightmares Fear Factory

It's so frightening, the factory advises pregnant women and those with heart conditions to stay away.

Nightmares Fear Factory

As the images show, even grown men can't handle Nightmares Fear Factory.

Nightmares Fear Factory

This brave man is leading a group of three through the factory.

Nightmares Fear Factory

Since we don't know exactly what these visitors are seeing at the time the photos are snapped, it's hard to judge their reactions too harshly.

Nightmares Fear Factory

But it's clearly something really frightening.

Nightmares Fear Factory

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