Gachang-myeon is ringed by mountains and threaded by narrow valleys. These include Biseulsan (1084 m) and Choejeongsan (889 m). This rugged topography makes it a favored destination for outings, both for mountain climbers and for those seeking only to enjoy the resort facilities in the Naengcheon valley. Heritage sites include the Nokdong Seowon, a seowon, and the Buddhist temple of Unheungsa.