Ключевые слова: architecture, bank, banking, blue, building, business, cepsa, city, cityscape, crisis, cuatro torres, curtain, curtain wall, development, district, downtown, europe, exterior, facade, finance, financial, foster, four towers, four towers business area, glass, insurance, investment, landmark, luxury, madrid, modern, norman foster, office, pricewaterhousecoopers, professional services, property, pwc, real estate, rental, sky, skyscraper, spain, spanish, steel, structure, tall, tower, travel, urban, wall,