Mueang Sing is a historical park in the Sai Yok district, Kanchanaburi province, One of the most important sites found in the Kwai Noi River basin is an ancient city site named Muang Sing. The important discoveries made near the ancient city remains include prehistoric human skeletons together with metal tools, vessels and ornaments; brick bases of the Dvaravati period architecture; and the laterite ruins of the13th century.