Although Chiang Kong is a relatively small town, it is dotted by a handful of Buddhist temples such as Wat Narang, Wat Luang, and Wat Phra Kaew. Wat Phra Kaew is the oldest among the temples and in the entirety of Chiang Khong. This temple holds a lot of importance, and several of the religious festivals occur here, and visitors can find an emerald statue in the sermon hall. Just a few yards from this temple, you'll find Wat Narang, and here you get to witness a statue depicting a disciple of Buddha among bushes. Known for its beauty and detail, Wat Luang slightly resembles the temples of Chiang Mai. The best part, entering Wat Luang is free!
Bear in mind that Buddhism is the main religion in Thailand, therefore you need to be respectful when entering temples and even when you're there. Certain temples will expect you to dress modestly, otherwise, you cannot enter.