Sanmon Station is a stop on the Mount Kurama Cable Railway, located at the foot of the mountain; as the name shows, the station is located at the place right after passing the Sanmon (temple gate) (Nio-mon Gate) of Kurama-dera Temple.
鞍馬鋼索鉄道の山下駅に相当し、その名のとおり鞍馬寺の山門（仁王門）をくぐってすぐの場所にある。