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
Allison Engine Testing Stands the stands and adjacent to the north, a hut. Only men were employed here in the round-the-clock shifts of Australian civilians and American servicemen. On 13 August 1943 a reporter for the Courier-Mail described the work as the "noisiest war job" (p4). Complaints about the noise by Brisbane residents possibly influenced the design of the next two enclosed testing stands, plans for which were drawn up in March 1943. Including contingencies, their estimated cost was . As these two brick sound-proofed stands, a slab for a warehouse to the immediate north of the earlier hut, and the additional two open