Ключевые слова: architectural feature, architecture, arrow, arrowhead, background, black, boundary, cast iron, closed, closeup, concept, construction industry, cut out, design, entrance, fence, from below, gate, grating, gray, grey, industry, iron, ironwork, isolated, material, metal, metal grate, metallic, modern, no people, part of, private property, protection, railing, row, safety, security, security bar, security system, shape, sharp, shielding, spear, spiked, steel, strength, white background, wrought iron,