Chamseongdan
| Chamseongdan | |
|---|---|
Chamseongdan Altar on Manisan, Ganghwa Island | |
Interactive map of Chamseongdan | |
| Location | Ganghwa County, Incheon, South Korea |
| Coordinates | 37°36′57″N 126°25′41″E / 37.61583°N 126.42806°E |
| Area | 5,774 square metres (62,150 ft2) |
| Built for | Ritual offerings to heaven (traditionally associated with Dangun) |
| Official name | Chamseongdan Altar, Ganghwa |
| Designated | 1964-07-11 |
| Korean name | |
| Hangul | 참성단 |
| Hanja | 塹星壇 |
| RR | Chamseongdan |
| MR | Ch'amsŏngdan |
Chamseongdan (Korean: 참성단; Hanja: 塹星壇) is an ancient altar located at the summit of Manisan (摩尼山) in Hwang-ri, Hwado-myeon, Ganghwa County, Incheon, South Korea. It is traditionally believed to have been built by Dangun (단군), the legendary founder of Gojoseon, during ancient times. On July 11, 1964, it was designated as Historic Site No. 136 of South Korea.