Ключевые слова: abstract, architecture, art, building, business, china, circle, circular, city, climb, climbing, coil, construction, curve, design, down, floor, footstep, geometric, handrail, home, hong, hongkong, indoors, infinity, interior, kong, lose, maze, metal, modern, office, old, outdoor, oval, perspective, rail, railing, rotate, round, screw, shape, snail, spin, spiral, stair, staircase, step, tall, tower,