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Cheomseongdae observatory

Period
c. AD 640
Map
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Cheomseongdae is an astronomical observatory in Gyeongju, South Korea. Cheomseongdae is the oldest surviving astronomical observatory in Asia, and possibly even the world. It was constructed during the Silla period, during the reign of Queen Seondeok. Cheomseongdae was designated as the country's 31st national treasure on December 20, 1962. It is part of Gyeongju Historic Areas, a UNESCO World Heritage Site.

View on the mapWorld History: AD 640sContinue reading on Wikipedia

Sources: Wikipedia — Cheomseongdae · CC BY-SA 4.0

Earlier and later events nearby

  1. 109–108 BCHan conquest of Gojoseon
  2. AD 527Martyrdom of Ichadon; Silla adopts Buddhism
  3. c. AD 640Cheomseongdae observatoryThis page
  4. c. AD 640Construction of Cheomseongdae observatory
  5. AD 645–668Goguryeo–Tang War
  6. AD 663Battle of Baekgang

Who ruled this land

States that held this place in the historical borders data (Cliopatria). Years are approximate, as fine as the data's snapshots (every few years to a century). Tap to open the map for that year.

  1. 150–100 BCJin state
  2. 50 BC – AD 375Jinhan confederacy
  3. AD 400–675SillaThis page
  4. AD 700–925Unified Silla
  5. AD 950–1240Goryeo
  6. 1260–1280Mongol Empire
  7. 1300–1360Yuan dynasty
Show 6 more
  1. 1380Goryeo
  2. 1400–1895Joseon
  3. 1900–1910Korean Empire
  4. 1912–1944Empire of Japan
  5. 1946United States
  6. 1948 –South Korea

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