Chatuchak park is one of the oldest public parks in Bangkok. Construction began in 1975 on land donated by the State Railway of Thailand. The park opened on 4 December 1980. It has an area of 0.304 square kilometres. It was later augmented with Queen Sirikit Park and Wachirabenchathat Park, though they are separated from Chatuchak Park by Kampaengphet 3 Road. An artificial lake runs along this thin and long park with numerous bridges crossing the lake. A train museum is situated inside the park.