This Wat was built in 1391 and it once stood as high as 90 meters tall, but due to being damaged during an earthquake, it was later reduced in height. Construction was started by King Saen Muang Ma to house his father’s ashes, King Ku Na. The building was expanded to its final form until about 1475 by various other kings. This Wat was also once the site where the Emerald Buddha, the most important Buddha image in Thailand, was held. After the damage received during the earthquake, the Buddha was moved for safety reasons.