Landscape architecture firm West 8 has added rolling hills with playgrounds and art installations across Governors Island in New York harbour (+ slideshow).
Opening to the public later this month, The Hills on Governors Island takes up 10 acres (four hectares) of park space.
Measuring between 26 and 70 feet (eight and 21 metres) in height, the four grassy mounds provide spaces for walking, play and other outdoor activities, as well as panoramic views of the city's skyline.
The lowest of the hills, Grassy Hill, has gentle slopes. It allows views across the island from its top.
At 36 feet (11 metres) high, Slide Hill is home to four slides, including the longest in New York City.
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