Phutthamonthon is a district (amphoe) in the east of Nakhon Pathom Province, central Thailand. Neighboring districts are (from the north clockwise) Bang Len, the districts Sai Noi, Bang Yai and Bang Kruai of Nonthaburi Province, the district Thawi Watthana of Bangkok, and Sam Phran and Nakhon Chai Si. The minor district (King Amphoe) was created on April 1, 1991, when three tambon were split off from Nakhon Chai Si district. It was upgraded to a full district on December 5, 1996. The most important building in the district is the Phutthamonthon park, a 40 ha buddhist park. The district was named after the park. One of the three campuses of Mahidol University is also located in Salaya. The district is subdivided into 3 subdistricts (tambon), which are further subdivided into 18 villages (muban).

Source: Wikipedia