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DeepEarlyNeolithicBronze AgeIron Age and ClassicalMedievalEarlyModern

Cheomseongdae

Monumental Construction

Description

Cheomseongdae is a monumental construction in South Korea, Asia. UNESCO World Heritage List: Gyeongju Historic Areas dates it to c. 632-647 CE. Its listed material is Granite. Its height is listed as 9 m (estimated). UNESCO World Heritage List: Gyeongju Historic Areas also records: “Observatory.”

One of the oldest surviving astronomical observatories in East Asia.

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Medieval — Cheomseongdae in context.

Medieval, 500 CE to 1,500 CEDates supported by mainstream archaeology. Natural formations remain undated.Timeline612532621366552351055613132672111415600 CE800 CE1,000 CE1,200 CE1,400 CE
Height9mConfidence: estimated
MaterialGraniteMohs 6-7 (mineral hardness scale)

Claims

Compare the published evidence and its interpretations. “Consensus” records the mainstream account; “Alternative” identifies a competing interpretation, not an equally established conclusion. Estimates and unresolved questions remain qualified in the claim text.

FieldConsensusAlternative
Date

632 CE - 647 CE

c. 632-647 CE

UNESCO World Heritage List: Gyeongju Historic Areas
No claims found.
Purpose

Observatory

UNESCO World Heritage List: Gyeongju Historic Areas
No claims found.
MethodNo claims found.No claims found.
Sources: UNESCO World Heritage List: Gyeongju Historic Areas

Calculating elapsed time...

Approximate - counted from January 1, 640 CE (UTC). Based on the midpoint of 632 CE - 647 CE; the underlying date is uncertain.

Separate totals since January 1, 640 CE (UTC)
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