Point Lookout State Park is a Maryland state park occupying Point Lookout, the southernmost tip of a peninsula formed by the confluence of the Chesapeake Bay and the Potomac River in St. Mary's County, Maryland. The park preserves the site of an American Civil War prisoner of war camp and the Point Lookout Light, which was built in 1830. It is the southernmost spot on Maryland's western shore, the coastal region on the western side of the Chesapeake Bay.