urban, london, street, concrete, architecture, tower, skyscraper, skyscraper building, grey, cloudy, cloudy sky, dark, shadow, repetition, urban areas, london - england, urban backdrop, architectural, architectural details, architectural detail, architecture detail, high-rise, building, worm, eye, city, repeat, darkness, district, gray, column, urban area, edifice, scene, invertebrate, building material, national capital, paving, animal, capital, seat, road, center