- Horror in the heart of the Mile High, 13th Floor is Denver’s largest haunted house - now 10,000 square-feet larger than last year with improved parking and a larger waiting area.
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Five of Colorado's Scariest Haunted Houses and Attractions
Wednesday, October 4, 2017 at 8:29 a.m. by Byron Graham
Looking to get scared in Denver? Here's your guide to the scariest haunted houses in town.