Nightmare on 13th is Utah’s scariest Haunted House Attraction. Celebrating 32 Years of Halloween! Nightmare on 13th has two attractions, the Nightmare Haunted House, and New for 2022 the Institute of Terror which is included with every VIP ticket. Nightmare on 13th also strives to make the experience family-friendly. The All-New Giant Reaper haunts the Nightmare Courtyard which provides an introduction to what nightmares lurk inside the haunted house. The huge turrets, bell tower, and entering in through the Drawbridge adds to the thrill of walking into a haunted castle. Once inside, visitors will find themselves faced with nightmares featuring exclusive characters and themes only found at Nightmare on 13th.