The Tip-Top House is a historic former hotel in Mount Washington State Park in Sargent's Purchase, New Hampshire, United States. Built in 1853, it is the oldest surviving building in the summit area of Mount Washington, and is believed by the state to be the oldest extant mountain-top hostelry in the world. It features exhibits concerning the mountain's history. Located near the modern summit building and other visitor facilities, it is open for a fee to visitors from early May to early October. It was added to the National Register of Historic Places in 1982.