King Rama V wrote a letter dated Jan 9, 1876, saying: "It is called Ang Sila because it has big rock hills as well as two oval rock ponds. Nowadays, this tambon in Chon Buri has fewer rocks for the production of this kind of kitchen tool. Today, tambon Ang Sila as part of Muang Chon Buri is located about 5km from downtown Chon Buri and around 90km from Bangkok. Zone 2 consists of Maharat Building and Rachini Building restored by King Rama V's Queen Saovabha and named by the king. In 1897, during the reign of King Rama V, Queen Saovabha funded the restoration of the two buildings as merit-making on his birthday.

Source: Bangkok Post February 13, 2019 23:15 UTC