1. The Washington Arch Is Not A New York City Landmark
Despite what you may think, the Washington Arch itself is not a New York City Landmark. It is, however, part of the Greenwich Village Historic District as designated by the Landmarks Preservation Commission in April 1969. An interesting fact though, the 2004 arch restoration effort received awards from both the Greenwich Village Historical Society and the Lucy Moses Preservation Award from the Landmarks Conservancy.
For more, check out the Top 10 Secrets of Washington Sqaure Park and 8 Monumental Arches of NYC: Washington Square Park, Grand Army Plaza, Manhattan Bridge