Kaluzhskaya (Russian: Калужская) is a station on the Kaluzhsko-Rizhskaya Line of the Moscow Metro. It opened on 12 August 1974, replacing a temporary station of the same name (located in a service bay of the nearby Kaluzhskoe Depot) that had been operating since 1964. The new station was built to the column tri-span design with tapered octagonal columns in place of the usual square ones. Also the step of the columns was extended from 4 metres to 6.5, and the height of the ceiling raised. The columns are faced with pink Baikal marble, the walls are tiled with white ceramic and decorated with metallic artworks (works of A. Leonteva and M. Shmakova); the floor is laid with grey granite. The architects of the station were N.