Wachirabenchathat Park (Thai: สวนวชิรเบญจทัศ) or State Railway Public Park (สวนรถไฟ, read suan rot fai) is a name of public park in Chatuchak district, Bangkok, Thailand. It was opened on 28 July 2002 and named by the Prince Maha Vajiralongkorn. The park borders on the Queen Sirikit Park and Chatuchak Park, and it is also the largest park of the complex, covering an area of 0.6 square kilometres. It is one of the most popular parks in Bangkok.
Before the park was transformed into a public park, it was a golf course that belonged to the State Railway of Thailand. The park is commonly used for biking. It has a winding three-kilometer track for walking and biking around the park. At the start of bike track, there is a rental shop where visitors can rent bicycles for riding. Near the bike track, there is a lake where people can rent paddleboats to go around the lake.  In the park, there is a beautiful butterfly garden and insectarium for visitor's relaxation and education. The other interesting point is a miniature town. The town consists of Bangkok's famous buildings and tourist attractions in scaled-down version. It was created for children to learn about traffic rules by riding a bicycle in this area.  Moreover, the park also has a sports center that provides various types of courts where people play sports or exercise in many ways. For example, people can do fitness, do yoga, go swimming, play tennis, play futsal, and more.
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- Barrow, Richard. "Cycle Ride around Suan Rot Fai in Bangkok". www.richardbarrow.com. Retrieved 12 November 2015.
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