Heungnyeongseonwon is a temple of Sajasanmun, one of Gusanseonmuns. It was built by master Cheolgam, Doyun, and was managed by Jeoljung, a pupil of Doyun. There is no documents clarifying the arrangement of Buddhist temple and the time of establishment of Heungnyeongseonwon, but it's assumed to be built before the late 9th century. Heungnyeongseonwon had its period of prosperity in Goryeo Period, and it declined in Joseon Period. Before the early or middle 18th century, it became a closed temple, and was newly opened to Beopheungsa Temple.

There are many Cultural Assetss such as Jinghyodaesabointapbi, Jeokmyeolbogung, Jinghyodaesabudo, budo next to stone room, 2 pieces of stone type budo, lotus-carved stone, Chujeongbuldaejwa, the turtle base of a stone monument in front of Sohyeondangsibi, stone room, stone box, and Beopheungsajunggeonbi of Sajasan Mt. in the precinct of Beopheungsa Temple presently. These remains were researched for the excavation the first time in 2002 by Gangwon Cultural Assets Research Institute, and in 2004, the second research for excavation was operated.

[References]
Jeong, Yeongho, 1969, {Research of Heungnyeongsaji in Sajasan Mt. of Silla Period)}, <Baeksanhakbo>7th issue;
Gangwon Cultural Assets Research Institute, 2002, <Research Report of Heungnyeongseonwon in Sajasan Mt.>.