Bohyeonsan or Bohyeon Mountain or Mount Bohyeon is located in the province of North Gyeongsang Province, eastern South Korea.

Its peak has an elevation of 1,121 metres (3,678 ft),[1] and is near the city of Yeongcheon.

The Bohyeon Mountain Starlight Festival takes place in summer and is centered in the Bohyunsan Optical Astronomy Observatory, which was established in 1996.

[2] This observatory houses the third-largest telescope in Korea, which is the country's largest optical instrument.

There is also a Bohyeon Mountain Science Museum, situated just below the observatory, run by the Yeongcheon City Government.