William Penn (statue)
From Tardis Wiki, the free Doctor Who reference
In Philadelphia, there was a statue of William Penn.
In 2008, Brittany Mordley saw it before she attempted suicide from atop a building. (PROSE: Silver-Tongued Liars)
Behind the scenes
While not stated in PROSE: Silver-Tongued Liars, the statue was located on top of the Philadelphia City Hall. It was created by Alexander Milne Calder.