Sitting feet away from the water of Lake Michigan, 13 Terrors, takes place in what used to be a sanitarium and today is known as Theatre on the Lake. Terror reigns at the eerie Theater on the Lake as visitors confront evil clowns, a spinning vortex and creepy mausoleum filled with deadly ghouls. 13 Terrors is by same creative team that brought you Trail of Terror at Peterson Park. This year marks the 13th year of Trails and being a little superstitious weâ€™ve taken the scare on the road. $10 per person. Special discounts for special nights.