Philadelphia, referred to colloquially as "Philly", was a city in the United States of America.
The Eleventh Doctor and Alice Obiefune visited Philadelphia on 1 July 1789 to meet Alexander Hamilton during the passing of the tariff act by the United States Congress. While the Doctor and Alice were there, the Congress were attacked by werewolves. (COMIC: The Long Con)
During Miracle Day, dysentery spread to Philadelphia. (TV: Escape to LA)