Oct 11, 2021 · Fear Columbus Haunted House (formerly 13th Floor) -2605 Northland Plaza Dr, Columbus, Ohio - (For More Information) - Fear Columbus is considered the largest and scariest haunted house in Columbus! Carnage Haunted House - 3770 Refugee Rd, Columbus, Ohio - ( For More Information) - Carnage Haunted House has a new 60,000 square foot location.. "/>