houses, gray, silhouette, concrete, sky, dark, architecture, uk, edinburgh, simple, minimal, buildings, detail, town, urban, city, roofs, united kingdom, contrast, scotland, white, black, dwelling, house, seat, district, housing, edifice, european country, capital, kingdom, metropolis, urban area, building material, urban center, paving, United Kingdom, center, building, outline, grey, roof, Britain, protective covering