Ключевые слова: abstract, architecture, barbed, barbed wire, barrier, blue, border, boundary, building, building exterior, built structure, cement, concrete, construction, day, decoration, decorative, design, exterior, facade, fence, frame, hedge, line, material, metal, metallic, nobody, outdoor, pattern, privacy, private, protection, rough, security, sky, steel, structure, surface, texture, textured, urban, wall, wire,