The Battery, formerly known as Battery Park, is a 25-acre public park located at the southern tip of Manhattan Island in New York City facing New York Harbor. It is bounded by Battery Place on the north, with Bowling Green to the northeast, State Street on the east, New York Harbor to the south, and the Hudson River to the west. The park contains attractions such as an early 19th-century fort named Castle Clinton; multiple monuments; and the SeaGlass Carousel.