Ключевые слова: architecture, asphalt, black white, black and white, blackandwhite, blackwhite, bw, circular staircase, circular stairs, climb up, climbing stairs, cologne, descent, down, downward, downwards spiral, go down, go up, go upstairs, monochrome, spiral, spiral staircase, spiral stairs, spiral stairway, spiraling, stair, staircase, stairs, stairway, stairwell, steep steps, step, stepbystep, stepdown, stepping down, steps, up, upwards, winding staircase, winding stairs,