Button Bay, a 253-acre park, is located on a bluff in Ferrisburgh along the 130-mile long Lake Champlain. Historically, the area has been visited by such notables as Samuel De Champlain 1609, Ethan Allen 1776, Ben Franklin 1776, and Benedict Arnold 1777. Once operating as a farm, the area became a state park in 1964. The park is so named for the button-like concretions formed by clay deposits found along the shoreline.