Wat Kamphaeng Laeng (วัดกำแพงแลง เพชรบุรี) Phetchaburi This monastery is the biggest and oldest ancient remains in Phetchaburi. It was built in 13 A.D. when the influence of ancient Khmer culture expanded to this area. Originally, there were five prangs (Khmer-style pagoda) made of sandstone to worship accordance with Bhramanism. When the influence of Buddhism prevailed in the region, it was turned into a Buddhist temple. A Shrine hall was later constructed in the compound. Today, visitors can only admire the remaining three prangs which remain next to the sandstone walls.