This leafy area resembling a London park has been through numerous incarnations since it was set aside by William Penn. From 1705 until after the Revolution, the square was lined on three sides by houses and on the fourth by the Walnut Street Prison. The latter was home to Robert Morris, who went to debtors' prison after he helped finance the Revolution. The square served as a burial ground for victims of the 1793 yellow fever epidemic and for 2,600 British and American
soldiers who perished during the Revolution. The square holds a Tomb of the Unknown Soldier, erected to the memory of unknown Revolutionary War soldiers. By the 1840s the square had gained prestige as the center of the city's most fashionable neighborhood. It later became the city's publishing center.
Bounded by 6th and 7th Sts. and Walnut and Locust Sts., Philadelphia, Pennsylvania, 19106, United States