Wat Chamathewi (Chama Thewi or Chamadevi) or Wat Kukut (Temple of the Broken Reliquary) as it is also known; was built at some point in the 8th or 9th century. It contains two authentic Mon chedi. The first and larger of these is the Mahapon Chedi or 鈥楪reat Victory Stupa'; also known as Chedi Suwanna Chang Kot or 鈥楬eavenly Stupa with a Magnificent Summit'; a tall structure of laterite and stucco set on a square laterite foundation. Nearby there is another chedi of smaller proportions but almost equal style. This structure; called the Ratana Chedi; is said to contain the ashes of the great queen Chamathewi herself.

Lamphun was the capital of the small but culturally rich Mon Kingdom of Haripunchai from about 750 CE to the time of its conquest by King Mangrai (the founder of Chiang Mai) in 1281.