Architecture of Madrid of Music is a work of 1988. In the 21st century, Madrid faces new challenges in its architecture. An old industrial warehouse is the Interpretation Centre of New Technologies, and the CaixaForum Madrid (Herzog & de Meuron) was a former power station. Under the government of Alberto Ruiz-Gallardón the four tallest skyscrapers in Spain were built, and together form the Cuatro Torres Business Area (CTBA). The Manzanares River is crossed by new edge bridges, and work started on the International Convention Centre (Mansilla+Tuñón), an original round building, whose works remain paralyzed by the crisis. Caja Mágica (Dominique Perrault) sport centre
El Madrid de los Austrias and infrastructure projects, in order to represent their power and wealth through their shaping of public space. El Madrid de los Austrias subsequently took the name of its builders, the Spanish Habsburgs, who are known as "the Austrians" in Spanish. Its typical architectural style ranges from the late Renaissance through the early Baroque. The most notable Habsburg construction and the essential part of El Madrid de los Austrias is the Plaza Mayor, in the middle of which stands a statue of its builder, King Philip III. Laid out in 1619, the Plaza Mayor is a large, rectangular plaza with arcades