Phra Borommathat Worawihan Temple is a historic royal temple in Chainat with roots dating back to the early Ayutthaya period, featuring its most significant landmark, the U Thong-style pagoda that enshrines sacred relics of the Buddha. The temple's vihara houses Luang Pho Phet, a Maravijaya Buddha image renowned for its exquisite features and spiritual sanctity according to ancient beliefs. Furthermore, the temple grounds host the Chainat Muni National Museum, which displays a vast collection of invaluable artifacts discovered within Chainat and its surrounding areas. A visit to this temple offers a profound experience at the heart of local faith and one of the most important historical learning centers in the Chao Phraya River basin.