Fatland (Audubon, Pennsylvania) – also known as "Fatland Farm," "Fatland Ford" and, currently, "Vaux Hill" – is a Greek Revival mansion and estate in Audubon, Pennsylvania. Located on the north side of the Schuylkill River, opposite Valley Forge, the property was part of the 1777-78 Continental Army's encampment. On consecutive days in September 1777, its original farmhouse served as headquarters for General George Washington and British General Sir William Howe.