Bung Boraphet is the largest freshwater swamp in Thailand, covering an area of more than 200 square kilometers. The site is home to a large number of sea flowers, along with unique fish and birdlife, including the tiger perch and the incredibly rare white-eyed river martin. From November through March, a huge number of waterfowl migrate to Bung Boraphet, and indeed, one of the main draws is birdwatching. Other popular spots and activities include a crocodile farm, boat rides on the lake, and an extensive aquarium.
Some parts of Bung Boraphet have been designated as no-hunting areas by the Wildlife Conservation Division, and in 2000, the site was declared a wetland of international importance by the Thai government.
Bung Boraphet is located approximately 20 kilometers from Nakhon Sawan and can be accessed by either car or boat.