 European settlement in Southeast Washington first occurred in 1662 at Blue Plains (now the site of the city's sewage treatment plant just to the west of the modern neighborhood of Bellevue), and at St. Elizabeth (now the site of St. Elizabeths Hospital psychiatric hospital) and Giesborough (now called Barry Farm) in 1663.In 1663, Lord Baltimore granted ownership of the majority of the area on the south bank of the Anacostia River to George Thompson.The area became part of the District of Columbia in 1791.