Ключевые слова: above, accessibility, architectural, architecture, asphalt, blue, bridge, building, built structure, city, cloudy, concrete, day, denver, downtown, elevated walkway, empty, engineering, fence, footbridge, footpath, grass, high up, landmark, low angle view, man made structure, manufactured, metal, modern, no people, nobody, outdoor, pedestrian, pedestrian walkway, rail transportation, railings, safety, sidewalk, sky, staircase, steel, steel cable, steps, strength, structure, summer, transport, transportation, urban,