The Pinnacle@Duxton public housing buildings are visible in the distance behind low rise buildings in Singapore. The Pinnacle@Duxton project features the world's two longest sky gardens, each 500 metres long,on on the 26th and 50th floors. They features a jogging track and a sky park. All seven towers that form The Pinnacle@Duxton are the world's tallest public housing buildings with a total of 1,848 units of housing. With a growing urban population, high-rise buildings are an increasingly prevalent feature cities across the world. Land is a major constraint in most Asian cities and in the face of high-density urbanisation, the only way to build is upwards. In the dense, urban environment of Singapore, where land area is severely limited, high-rise buildings have typified the urban fabric for years.