PHILADELPHIA - If you want to experience a truly terrifying attraction, you'll want to visit some of the most popular Philly haunted attractions. Some of the city's most famous haunts are Eastern State Penitentiary, Grumblethorpe, Powel House, and Laurel Hill East. Each offers a different, terrifying experience. Listed below are some of the best options in Philadelphia. Interested in visiting one of these haunted attractions in person? Continue reading to find out more.