Wikipedia:Main Page history/2017 December 23

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Cheomseongdae

Cheomseongdae is an astronomical observatory in Gyeongju, South Korea. It is the oldest surviving astronomical observatory in Asia. It was constructed in the 7th century in the kingdom of Silla. Cheomseongdae was designated as South Korea's 31st national treasure in 1962. Modeled on Baekje's Jeomseongdae, which now exists only in historical records, Cheomseongdae influenced the construction of a Japanese observatory in 675, and Duke Zhou's observatory in China in 723.

Photograph: Matt and Nayoung Wilson

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