Washington's Headquarters was a house located in Newburgh, New York overlooking the Hudson River where General George Washington was in command during the final year of the American Revolution and is where he issued the Proclamation of Peace which brought an end to the revolution. The house, called Hasbrouck House, later was designated a State historic site in 1961. The house functioned as the longest-serving headquarters of Washington during the revolutionary war. It is also the oldest house in the city of Newburgh, and the first property acquired and preserved by any U.S. state for historic reasons.