Wat Phra Kaeo
Wat Phra Kaeo, which is located on Trairat Road on the northwest side of town, is the best known of the northern temples. It once housed the Emerald Buddha, Thailand's most important Buddha statue which was discovered in 1444. The statue had been moved by various state rulers to be placed in their capitals including Lampang, Chiang Rai and Vientiane before finally being enshrined in Bangkok's royal Wat Phra Kaeo.
There is now a green jade replica of the image on display. The temple also houses a 700-year bronze statue of Phra Chao Lan Thong, which is housed in the Chiang Saen style ubosot.
Wat Phra That Chedi Luang
Next to Chiang Saen National museum is an ancient 88-meter high, bell-shaped, Lanna style principal chedi which has a 24 meter circumference base. Constructed in 1290 by King Saen Phu, the 3rd ruler of the Lanna kingdom, it is the tallest religious Lanna monument in Chiang Rai. In addition, there are also remains of ancient vihans and chedis.