
Vibrant island with sandy beaches, hotels & a casino, plus golf courses, a theme park & aquarium. Sentosa Island, known as Sentosa, and formerly Pulau Blakang Mati, is an island located off the southern coast of Singapore’s main island. The island is separated from the main island of Singapore by a channel of water, the Keppel Harbour, and is adjacent to Pulau Brani, a smaller island wedged between Sentosa and the main island.