As the head temple of the "Samamsa" trio, (three "rock" temples, Unamsa, Yongamsa, Seonamsa), Seonamsa played a fundamental role in the development of Seon Buddhism, and many masters have practiced, taught and attained awakening here.
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Legend states that in 529 CE missionary-monk Ado built a hermitage at this site on the eastern slope of Jogyesan and named it Biroam.