Cheomseongdae Observatory
You may be surprised to see that this, the oldest existing astronomical observatory in all of Asia, is not on the top of a mountain -- it's actually on flat land. The 362 stones that make up the 27-level structure represent each day of the lunar year. Built during the reign of Shilla Queen Seon-deok (A.D. 632-647), it was used for observing the stars in order to forecast the weather.
You may be surprised to see that this, the oldest existing astronomical observatory in all of Asia, is not on the top of a mountain -- it's actually on flat land. The 362 stones that make up the 27-level structure represent each day of the lunar year. Built during the reign of Shilla Queen Seon-deok (A.D. 632-647), it was used for observing the stars in order to forecast the weather.
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