The Eastern State Penitentiary, a defunct prison that opened in 1829 and once housed infamous gangster Al Capone, is located at 2027 Fairmount Avenue in Philadelphia, Penn. It is open for public tours daily from 10 a.m. to 5 p.m. EST.
The largest and most expensive structure ever built as of its opening, the prison's wagon wheel design and focus on reform rather than punishment influenced hundreds of prisons worldwide. It was closed by the Commonwealth of Pennsylvania in 1971 after 142 years. It is currently managed by the Eastern State Penitentiary History Site, Inc. As of 2014, adult admission is $14, senior admission is $12 and students and kids are admitted for $10. The tour operators do not recommend children under 7 years of age take the tour.