Some of the reviews and photos are clearly wrong showing the similarly-named temple in Chiang Mai. That being said, this is a well-preserved ancient temple next to Chiang Saen National Museum. There is some ongoing construction of a new temple next to it. Atmospheric temple that is worth a visit.

We reached this temple on a taxi tour to the golden triangle and the old temples in Chiang Saen. There are a number of ruins nearby, but this appeared to be the best maintained. Wat Chedi Luang was once, Chiang Saen’s main temple. There is a large chedi and the ruins of a wiharn nearby. There appears to be some renovation going on here, with a new roof visible and a new Buddha image installed, although the sides of the hall are still open. There are a number of tall trees here giving shade to the area. Chiang Saen National Museum, Wat Phra Buat, Wat Mung Muang and Wat Maha That, are all within walking distance of Wat Chedi Luang. We visited all this ruins but the museum was closed for renovation. It took us about 1 hour to walk around and capture some pictures of this area.