The Esplanade - Theatres on the Bay is a waterside building located on six hectares of waterfront land alongside Marina Bay near the mouth of the Singapore River, purpose-built to be the centre for performing arts for the island nation of Singapore. Taking its name from the nearby Esplanade, It contains a 1,600 seat concert hall and a 2,000 seat theatre for the performing arts. The library @ esplanade is located on the third floor of the building. There are outdoor performing centres, and retail and food space at the Esplanade Mall. There is an outdoor open space on the fourth floor of the building.