The House of Choi Seung-hyo is a traditional residential building located on the southeastern slopes of Yangnimsan Mountain. The rectangular building is open to the east, has 8 kan (the space between two pillars) in the front and 4 kan to the sides, and is graced by a traditional hipped and gabled roof. Since the building was constructed in the 1920s, it offers a valuable glimpse into the architectural style of Korean houses at the end of the Japanese colonial period. Choi Sang-hyeon was an activist who offered his attic as a place of refuge for other activists.