(Kings County: Pop. 2,528,050) [82] is the city's most populous borough and was an independent city until 1898. Brooklyn is known for its cultural, social and ethnic diversity, an independent art scene, distinct neighborhoods and a distinctive architectural heritage. It is also the only borough outside of Manhattan with a distinct downtown neighborhood. The borough features a long beachfront and Coney Island, established in the 1870s as one of the earliest amusement grounds in the country.[85]