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
Community of Madrid fluvial river basins. Province of Madrid occupies a surface area of approximately 8,028 km (1.6% of all Spanish territory). More specifically, the exact position of Madrid is 3° 40´ of longitude west of Greenwich, England, and 40° 23´ north of the equator. Practically all of the Province is located between 600 and 1,000 m above sea level, with the highest point being Peñalara at 2,430 m and the lowest Alberche river in Villa del Prado at 430 m. Other considerable heights, as well as being famous, are the Ball of the World mountain (la Bola del Mundo) in Navacerrada, at