Ключевые слова: abstract, architecture, background, building, business, climb, concept, concrete, construction, contemporary, curve, decorative, design, down, empty, entrance, exterior, floor, handrail, high, home, industrial, inside, interior, ladder, lobby, marble, metal, modern, pattern, perspective, railing, raise, space, spiral, staircase, stairs, stairway, steel, steps, stone, structure, swirl, top, up, urban, walking, walkway, wall, way,