Fairmount

With its dramatic gothic architecture (complete with gargoyles and dark grey stone) now crumbling, Eastern State Penitentiary may actually be creepier now than it was in the 1970's, when it last held prisoners. Largely believed to be haunted, the now-empty prison hosts after-dark programming during Halloween that's largely considered to be some of the scariest in the country. During the day, scaredy cats can visit for history-rich tours, learning about the famous escapes, prisoners (Al Capone stayed here), and the Quaker philosophies that guided the architecture and programming in its earliest days. Admission comes with a free audio tour that's narrated by Steven Buscemi.