If you are in the town during the Thai (Dai in that area) New year there is a massive celebration with Dragon boating and capped off with a massive city wide water fight on the final day of celebration.
西双版纳总佛寺
The Xishuangbanna Zongfo Temple was one of the first Pali-speaking Buddhist monasteries to be established in Xishuangbanna and is said to have been built in 615. On 18 June 1990, Zhao Puchu, the president of the Chinese Buddhist Association, changed the name of the temple to "Xishuangbanna Zongfo Temple".
曼阁佛寺
The Mange Temple is the oldest Buddhist temple building in Jinghong, located in the Mange Cottage, just north of the Lancang River Bridge and not far from the river. The Mange Temple is a typical Theravada Buddhist monastery and is one of the ancient temples in Xishuangbanna. The monastery was built in 1477 and the original site is 1km west of the compound.
西双版纳曼景兰大佛寺
The biggest temple in Xishuangbanna. In the southern area in Jionghong, you can hire bicycle to go there.