Coney Island is a peninsular residential neighborhood, beach, and leisure/entertainment destination of Long Island on the Coney Island Channel, which is part of the Lower Bay in the southwestern part of the borough of Brooklyn in New York City. The site was formerly an outer barrier island but became partially connected to the rest of Long Island by land fill. The residential portion of the peninsula is a community of 60,000 people in its western part, with Sea Gate to its west, Brighton Beach and Manhattan Beach to its east, the Lower Bay to the south, and Gravesend to the north. Coney Island is well known as the site of amusement parks and a seaside resort. The attractions reached a historical peak during the first half of the 20th century, declining in popularity after World War II and following years of neglect. In 2001 the area saw the opening of MCU Park stadium which has become home to the Brooklyn Cyclones minor league baseball team, as well as the New York Cosmos professional soccer club. In addition, Coney Island opened a new amusement park among several adjacent ones.