Hyde Park is one of the largest parks in London, and one of the Royal Parks of London. The Park is the largest of four parks which form a chain from the entrance of Kensington Palace through Kensington Gardens and Hyde Park, via Hyde Park Corner and Green Park (19 hectares), past the main entrance to Buckingham Palace and then on through Saint James's Park (23 hectares) to Horse Guards Parade in Whitehall. The park is divided in two by the Serpentine and the Long Water.