Haunted Attraction: Halloween Haunted House Near Thornton, CO

Halfway to Halloween Event Tickets on Sale Now!

⚠️ WARNING: Event may be too scary for children 12 & under ⚠️


Finding the perfect Halloween attraction that fulfills everyone's demands isn't easy. However, at The Frightmare Compound, Thornton residents have found that there's something here for everyone. No matter if you're ready to take on the terror in the form of a mini escape room, a monster museum, or a one of a kind horror house, we have the scares that are going to last our Thornton customers a lifetime.


General Admission
(Standard wait time)

Starting at

$29.99 / Per Person

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VIP Admission
(Limited wait time)

Starting at

$39.99 / Per Person

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Immediate Access
(No wait time)

Starting at

$59.99 / Per Person

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Denver's World Famous Haunted House

40 Years Of Terror!


You Never Know What You're Going to Encounter

The Frightmare Compound was founded over 35 years ago by Brad Holder in 1983. It's said that his final resting place is somewhere on the grounds of the compound. Not only does terror lurk behind every door, but you have to be on the lookout for the ghost of Brad Holder. With so many surprises waiting for our Thornton customers, do you have the courage to complete our horror house?


Frightmare Attractions

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    Event: Lights Out

    Are You Afraid of the Dark?

    You think our haunted house in Denver is scary with only a little light to guide your way through? Think about the terrors that await as we turn off all the lights in a complete blackout horror house. Our haunted attraction is the scariest the Denver community has ever seen. Only done a few nights every season, you'll be searching for the light switch in no time. Do you have what it takes to make it through the legendary Halloween attraction?

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    Monster Museum

    Do You Dare Enter Our Haunted Monster Museum in Denver?

    The Frightmare Compound's Monster Museum is a fun interactive walk-through collection from the past 40 years of Frightmare. The museum is full of props, masks, and antiques used in the haunted house for the past 4 decades! We have screen used props and signed memorabilia from some of Hollywood's biggest actors who have also visited the compound over the years. We even have a photo wall of actor pictures from the past! If you have acted as a creature or monster here at the compound, you might see yourself on our greatest hits wall. The monster museum is also home to The Frightmare Compound's gift shop where we offer souvenirs to remember your journey through Colorado's Oldest Haunted House.

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    Mini Escape Rooms

    Can You Survive Our Mini Escape Rooms for the Denver Community?

    Only the strongest of souls can survive unscathed when they enter our mini escape room in Denver. Whether you're fighting off masses of the undead, escaping an infamous serial killer, digging through a fresh corpse, or you're trying not to become someone's next meal, you're sure to be on your toes the entire time. With beads of sweat beating down your forehead and the clock wasting, you'll be wondering if you have what it takes to complete our escape room in Denver.

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    Coffin Simulator Ride

    Staring Death in the Eyes

    Are you ready to take your horror to the next level? What could be scarier than getting buried alive? At our coffin simulator, that's exactly the experience we provide for our Denver customers. For those audacious individuals, you'll be able to experience firsthand the horror of your demise. Beware; this haunted attraction is not for the weak minded. You'll be looking for an escape, only to find there isn't one.

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Many Travel from Thornton to Find Out What's Lurking in the Darkness?

It's time to turn the lights out as you head over to The Frightmare Compound for the limited time event. Every Halloween season, Thornton residents can travel to our haunted attraction only a few nights as our team prepares for the event. We turn off all the lights in the compound, leaving you in darkness. There, our Thornton customers must make their way through the haunted house filled with lost souls, enraged you're on their plane of existence.

The Haunted Attractions You Won't Forget

When you choose our haunted house serving the Thornton community, there's no way of telling what monsters will follow you long after you've left the grounds of the compound. You'll find that paranoia follows you, and you'll be startled at the slightest sound. For only the bravest of thrill seekers, visit our Halloween attraction for a chilling experience.

Time Is Running Out for Thornton Thrill Seekers

If you're from Thornton and are looking for an engaging haunted attraction, our mini escape rooms are perfect for you and your friends or family. Work together as the clock runs out to escape the horrors that await. Whether you're trapped with a serial killer, digging in a corpse to survive, surrounded by hoards of the undead, or you're about to become lunch, the tension will quickly build up, blurring your vision of the best escape plan. Don't fall short of the challenge, or the consequences can be deadly.

Something for the Whole Family in Thornton

If it's time to take a break from all the chaos happening at The Frightmare Compound and you want to commemorate your experience at the selfie station and gift shop at the monster museum or ready to face the terror during our coffin simulator, we have activities for the whole family. You can take pictures with creatures you've only seen in your wildest dreams and tell all your friends back home in Thornton how you slayed these dangerous entities.

Amplify Your Fright With Our Halloween Attractions near Denver

Terror lurks on the grounds of The Frightmare Compound as you make your way through the scariest horror house near Denver. Even the bravest of souls have whimpered at the sight of the monsters, ghosts, and unexplained roaming around the grounds. You’ll find unimaginable terrors behind every corner. Whether you’re ready to escape an infamous serial killer at our mini escape rooms, commemorate your experience at our monster museum, or face death head on with our coffin simulator, we have the haunted attractions that’ll satisfy all.

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