Wat Nantharam used to be called Wat Tai and currently houses Luang Pho Phut, a red sandstone Buddha image from the Ayutthaya period. Pak Phanang people worship this sacred image. In addition, the temple houses a giant phallic symbol found at Khao Kha archaeological site that is believed to be around 1,200 years old, from the 7th-9th century. The symbol is carved from limestone and is the most complete in southern Thailand. The temple is at Chai Nam Road, on the western side of Pak Phanang.