Sydney is well endowed with open spaces and has many natural areas. Many of these exist even within the compact city centre. These include the Chinese Garden of Friendship and Hyde Park (which is named after London's Hyde Park). The metropolitan area contains several national parks, including the Royal National Park, the second oldest national park in the world (after Yellowstone National Park), which occupies an area of 132 square kilometres (51 sq mi; 13,200 ha; 33,000 acres). Completing Sydney's wide array of green spaces, the leader is the Royal Botanical Gardens, with its large amount of green spaces, lush plants and colourful flowers.