The Night Safari is the world's first nocturnal zoo and is one of the most popular tourist attractions in Singapore.The concept of a nocturnal park in Singapore was suggested in the 1980s by the former executive chairman of the Singapore Zoo, Dr Ong Swee Law. Constructed at a cost of S$63 million, the Night Safari was officially opened on 26 May 1994 and occupies of secondary rainforest adjacent to the Singapore Zoo and Upper Seletar Reservoir.The Night Safari currently houses over 2,500 animals representing over 130 species, of which 38% are threatened species. The Night Safari is managed by Wildlife Reserves Singapore, and about 1.1 million visitors visit the safari per year. The Night Safari received its 11 millionth visitor on 29 May 2007.HighlightsUnlike traditional nocturnal houses, which reverse the day-night cycle of animals so they will be active by day, the Night Safari is an entire open-air zoo set in a humid tropical forest that is only open at night. It is divided into seven geographical zones, which can be explored either on foot via four walking trails, or by tram.The animals of the Night Safari, ranging from Indian rhinoceros and pangolins to tarsiers and Asian elephants, are made visible by lighting that resembles moonlight. Although it is brighter than full moonlight by a few orders of magnitude, it is dim enough not to disturb nocturnal and crepuscular animals' behaviour. London based lighting designer Simon Corder created the lighting for Night Safari.