Angkor Wat was built in the twelfth century and was originally a Hindu temple.
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窟 normally means a cave or grotto, as in 莫高窟, but Angkor Wat is a free-standing stone temple, also called 吴哥寺, "Angkor Temple". 吴哥 alone is the wider Angkor site, including the walled city 吴哥城. Its towers appear on the Cambodian flag.
