This structure is situated in the small ancient historical town of Chiang Saen, a former principality of the kingdom of Lanna. It is located just outside the old city walls, some 200 m from the local Tourist Service Centre. Its name is derived from the use of 300 teak, or \’sak\’, trunks used for the original enclosure.
The wat\’s foundation was laid in 1295 during the reign of King Mengrai. Seven different structures are still visible – the main chedi is believed to be mid to late 14th century. It combines elements of both Sukhothai and Hariphunchai styles, with possible Burmese influence as well.
Despite now being in ruins and thus deserted, the wat with its ornamental stucco motifs is regarded as being one of the most beautiful surviving examples of Lanna religious architecture in northern Thailand. Accordingly, the wat is currently undergoing complete restoration by the Fine Arts Department.