The World Famous 13th Floor Haunted House in Denver, Colorado. Featured on USA Today, ABC News, Discovery Channel & Huffington Post. Attractions: The Other Side — You and your friends are out riding your bikes, looking for something to do before the street lights come on. You turn back to suggest heading to the Quarry when you notice one of your friends is missing. Where did he go? Did he vanish to The Other Side? Tales of the Unknown, Fact or Fiction? — Perhaps you can solve the mystery. The idea of a creature who is half man half rat may seem far-fetched, but there are rumors that a doctor at Hades Labs may have been exposed to a new virus called Agent 13, causing him to transform into something terrifying. We have acquired surveillance footage of a large creature scurrying through the lab; could he be looking for a cure? Or simply his next meal? You decide. Clown — Every 13 years, Clown returns to our world to gain strength by feasting on the fears of children. It’s been 13 long years that Clown has been trapped inside the Thirteenth Realm, all while plotting his next gruesome attack. Will he reap his work and swallow your fear-drenched soul or can you evade his evil grip? Also featuring The Speakasy Bar and Mini Escape Games.