Sun-Earth Day Presents: Ancient Observatories, Timeless Knowledge

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Gaocheng

This site was established in 1279 AD by the famous astronomer Guo Shoujing. It is the oldest of 27 ancient observatories in China. Built with bricks and stone, the building has two parts, the platform and the stone Chinese sundial.Learn More»

Photo: ChinaCulture.org

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