such monument was the Washington Grays Monument. In 1954, the decision was made to remove the civil war commemorations and focus the square solely on the memory of the American Revolutionary War. Tomb of the Unknown Revolutionary War Soldier In 1954, the Washington Square Planning Committee decided that, instead of the original proposed monument to Washington, a monument to all soldiers and sailors of the Revolutionary War would be built. The monument, designated the "Tomb of the Unknown Revolutionary War Soldier", was designed by architect G. Edwin Brumbaugh and includes a bronze cast of Houdon's statue of Washington as the monument's centerpiece. The Tomb includes remains which were disinterred, after archeological examination, from within the park from when it was a cemetery. The remains are that of a soldier, but it is uncertain if he was Colonial or British. An unknown number of bodies remain buried beneath the square and the surrounding area; some are still occasionally found during construction and maintenance projects. Moon Tree A sycamore moon tree in the square, planted in 1975, was grown from seeds that had been carried to the moon by astronaut Stuart Roosa on the Apollo 14 mission. The moon tree died in 2009 and was replaced with a clone in 2011, which had also died as of November 2019, leaving the plaque about the moon tree in place. In popular culture The pop-punk group The Wonder Years wrote about Washington Square in their song "Washington Square Park", from their album The Upsides. See also Independence National Historical Park The St. James List of parks in Philadelphia References Notes External links Washington Square - Independence National Park, National Park Service Philadelphia.gov website Parks in Philadelphia National Register of Historic Places in Philadelphia Washington Square West, Philadelphia Society Hill, Philadelphia Independence National Historical Park Parks on the National Register of Historic Places in Pennsylvania