Wat Phra Si Rattana Mahathat
Built on a Hindu religious site originally established by the Khmers in the 11th or 12th century, this wat underwent so many restorations during the Sukhothai and Ayutthaya periods that it's difficult to discern the three original Khmer prangs—only the central one is intact. Several Sukhothai- and Ayutthaya-style chedis sit within the compound.