Opened in 1987 to commemorate King Bhumibol’s 60th birthday, this green area, about 15km southeast of central Bangkok, covers 81 hectares and includes a water park and botanic garden that is a significant horticultural research centre. There are resident lizards, tortoises and birds, and a flower and plant sale is held here in December. The park’s centrepiece is a museum dedicated to the life of the king. In 2009 the water park had yachting facilities added.