Also known as Temple of the Dawn, is one of the best known landmarks and one of the most published images of Bangkok. It consists of a massive elongated prang (Khmer-style tower), and is surrounded by four smaller prangs. The prang is described by the Tourism Authority of Thailand as 104m high, while most other sources quote figures around 80-85m. It is decorated by bits of porcelain which had previously been used as ballast by boats coming to Bangkok from China, a hallmark of the reign of King Rama III