Si Thep Historical Park contains the ruins of ancient Phetchabun,
which have displays of ancient remains a on the history and archaeology of the Si Thep Historical Park. Prang Song Phi Nong spire, one of several Khmer-style spires on site.KhaoKlangNai Ancient Monument, lying in the center of town, Stucco sculptures of humans and animals decorate its base, made in the Dvaravati style. A worshipping ceremony is held annually at a highly revered shrine in the west, Chaopho Si Thep Shrine.