Ключевые слова: abandoned, architecture, background, bethlehem pennsylvania, blast, bolt, brown, building, catwalk, chimney, column, corroded, decaying, derelict, exterior, factory, flaking, furnace, industrial, industry, ladder, manufacturing, metal, mill, old, outdoors, outside, paint, patina, pattern, peeling, pipe, red, rivet, rust, rusty, smokestack, stacks, stained, stairs, steel, texture, tube, urban, vent, vintage, walkway,