Overlooking a lovely stretch of the Mekong, this vast forest temple is centred on a cliff rising out of the river. The very peaceful temple is highly respected because of the Thai people's continuing reverence for the founding abbot, Luang Pu Thet, who they believe reached enlightenment. Several monuments in his honour, including a glistening chedi housing his few earthly possessions and a lifelike wax statue, are found around the grounds. Visitors must dress politely: no shorts above the knees or sleeveless tops.

The temple is midway between Si Chiangmai and Sangkhom. Sangkhom-bound buses from Nong Khai (50B, 2¼ hours) pass the entrance, and then it's a longish walk to the buildings.