Bang Pa-In Royal Palace,also known as the Summer Palace, is a palace complex formerly used by the Thai kings.

Bang Pa-In Royal Palace is located on the Chao Phraya River bank in Bang Pa-In district, Ayutthaya Province.
King Prasat Thong originally constructed the complex in 1632. Most of the present buildings were constructed between 1872 and 1889 by King Chulalongkorn.
Today the palace is used occasionally by their Majesties
King Bhumibol Adulyadej (Rama IX) and Queen Sirikit as a
residence and for holding receptions and banquets.
Bang Pa-In palace is located at Bang Pa-In district, 18 kms
south of Ayutthaya. It is 58 kms north of Bangkok by rail,
and 61 kms by road.