The Kallang Airport also known as the Kallang Aerodrome, Kallang Airfield and RAF Kallang, opened in 1937 as Singapore's first purpose-built civil airport, together with an anchorage for seaplanes. Land was reclaimed in the Kallang Basin to turn the swampy area into a circular-shaped airfield and to build a slipway for the seaplanes. The airport was closed in 1955 when the new Singapore International Airport at Paya Lebar was built.