18 S. Perry St., Pontiac; hauntedpontiac.com
Brothers Ed and Jim Terebus practically built this massive, 15-year-old, four-story haunted attraction from the ground up. Sure, the building was already there, but the two designed every part of the hellish world that now lives inside, including the sets, the costumes, and the props. Don't expect a single stretch of black hallway, there's always something coming at you inside Erebus.