Ключевые слова: architectural, architecture, area, blue, building, business, capital, city, cityscape, community of madrid, comunidad de madrid, construction, crisis, cuatro torres, curtain, curtain wall, development, downtown, europe, european, facade, financial, four towers business area, glass, highrise, luxury, madrid, office building, outdoors, real estate, sky, skyline, skyscraper, spain, spanish, tall, technology, telecommuting, teleworking, torre espacio, torrespacio, tourism, tower, travel, urban, wall,