Ключевые слова: abstract, architecture, art, building, circle, circular, climb, climbing, concrete, curve, dark, design, detail, down, entrance, fall, floor, form, granite, gray, handrail, high, historic, hole, home, indoor, indoors, interior, ladder, metal, old, perspective, precipice, railing, round, shape, spiral, spiralstairs, staircase, stairs, stairway, step, stone, structure, void, vortex, window,