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A group of Singaporean youths skateboard on Henderson Waves bridge, Singapore's highest pedestrian bridge built 36 meters above the road.<br />
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.