Muang Sing dates back to time of King Rama I (1782-1809), built as an integral part of his defences against the invading Burmese army.

Covering an area of over 700,000 sq.m, the southern wall runs parallel with the River Kwai.

The main temple is at the centre of the park, next to the remains of the second ruin, with the lesser monuments are scattered around.

The style of the temples, known as "Bayon" style, are in honour of ancient Khmer Kingdom during the 12th century reign of King Jayavarman. An inscription on one of the stones depicts Prince Kumara and his father naming over 20 cities.