Ключевые слова: architecture, building, business, business buildings, city, cityscape, concrete, construction, contemporary, corporate buildings, cubes, design, diagonals, downtown, europe, facade, finance, financial, financial district, frankfurt am main, germany, glass, glass reflections, hesse, landscape, lines, mainhattan, modern, office, old and new, patterns, rectangular patterns, reflections, sky, skyscraper, squares, stem, tower, urban, window, windows,