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
Madrid the kingdom of Castile as a property of the Crown. Christians replaced Muslims in the occupation of the centre of the city, while Muslims and Jews settled in the suburbs. The city was thriving and was given the title of "Villa", whose administrative district extended from the Jarama in the east to the river Guadarrama in the west. The government of the town was vested to the neighbouring of Madrid since 1346, when king Alfonso XI of Castile implements the regiment, for which only the local oligarchy was taking sides in city decisions. Since 1188, Madrid won the right to