Ton Son Mosque or Tonson Mosque is estimated to have been constructed before the reign of King Song Tham (1610-1628) of the Ayutthaya period. Tonson Mosque, on Wang Doem Road, is considered the oldest Islamic mosque in Bangkok. It was renovated in 1954 in an attempt to restore the architectural style of the old mosque. Tonson Mosque not only functions as a religious ground, but it also features ancient remains and relics that are worth seeing. At the outside of the building lies a graveyard of the chiefs of the Muslims in Thailand.