Also known as: 瞻星臺, star-gazing tower (from the cited Wikipedia lead)
Verified Korean-culture entity · as of 2026-09-08 · re-verified daily · cross-checked + Skill-scored · via KoreaAPI · ✓✓✓ triple cross-verified
About
Cheomseongdae (Korean: 첨성대; Hanja: 瞻星臺; lit. 'star-gazing tower') 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 (r.
Description via Wikipedia (lead extract) · name cross-verified Wikidata + Wikipedia.
Verified facts
Cheomseongdae (첨성대) — verified Korean place / attraction. Est. 0700.
Details
Heritage status: National Treasures of South Korea
Location: Gyeongju, South Korea
Type: astronomical observatory
Period: Silla period
Reign: Queen Seondeok
Distinction: oldest surviving astronomical observatory in Asia
Cheomseongdae (Korean: 첨성대; Hanja: 瞻星臺; lit. (Wikipedia lead; name cross-verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08, via KoreaAPI).
When was Cheomseongdae built or established?
Cheomseongdae dates to 0700 (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What are the coordinates of Cheomseongdae?
Cheomseongdae is located at 35.83472, 129.219 (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's heritage status?
Cheomseongdae — Heritage status: National Treasures of South Korea (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's location?
Cheomseongdae — Location: Gyeongju, South Korea (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's type?
Cheomseongdae — Type: astronomical observatory (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's period?
Cheomseongdae — Period: Silla period (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's reign?
Cheomseongdae — Reign: Queen Seondeok (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's distinction?
Cheomseongdae — Distinction: oldest surviving astronomical observatory in Asia (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's region?
Cheomseongdae — Region: 경상북도 (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's country?
Cheomseongdae — Country: 대한민국 (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's built?
Cheomseongdae — Built: 신라 중기 선덕여왕 재위시 (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's designated?
Cheomseongdae — Designated: 1962년 12월 20일 (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
What is Cheomseongdae's designation?
Cheomseongdae — Designation: 국보 제31호 (verified via Wikidata Q562765 2026-09-08 17:56 UTC; Wikipedia Cheomseongdae 2026-09-08 17:56 UTC; OpenStreetMap 382132601 2026-09-08 17:56 UTC, as of 2026-09-08).
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Verified & tracked since 2026-08-15 · 91 verified snapshots.
Append-only, timestamped — the record of WHEN a fact changed, which a latecomer cannot backfill. Full feed: /changes.json · machine-readable: get_history("place:cheomseongdae").
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