o means "20" in the northern Thai dialect and sure enough here you'll find 20 medium-sized chedis in an open setting. They're a mix of Burmese and Lanna styles and there is a small temple on site as well with a Chiang Saen-style Buddha image. A sign says "one can assume they are over one thousand years old," on account of votive tablets from the Haripunjaya period unearthed by villagers here. Locals say counting all 20 chedis will bring you good luck.
It wouldn’t be worth going all this way just to see the chedis but you can take in the more spectacular Wat Phrakaewdontao on the way.