This research report is a reference book on all Khmer edifices in present-day Thailand and the Laotian provinces that were formerly under Siamese control. They are located in the Menam Valley and on the Korat plateau, Bassac and the region between the Moon River and the Dangrek Mountains, as well as the old Isan provinces. The inventory emphasizes the Khmer inheritance in the fields of archaeology, inscriptions and etymology of present-day place names. Numerous descriptions and floor plans of temples and temple ruins as well as translations of important inscriptions are included. The author, who was a French authority on Khmer inscriptions, treats extensively the significance and lineage of various texts on these edifices, e.g. the inscriptions on the Ramkamhaeng stone.