Muslim Walls of Madrid Muslim Walls of Madrid The Muslim Walls of Madrid, also known as theArab Walls of Madrid, of which some vestiges remain, are located in the Spanish city of Madrid. They are probably the oldest construction extant in the city. They were built in the 9th century, during the Muslim domination of the Iberian Peninsula, on a promontory next to Manzanares river. They were part of a fortress around which developed the urban nucleus of Madrid. They were declared an Artistic-Historic Monument in 1954. The remains of utmost importance, with more archaeological than artistic interest, are in the Cuesta de la
Madrid on 16 January 1945 at . These records were registered at the airport, in the eastern side of the city. Precipitation is concentrated in the autumn and spring, and, together with Athens which has similar annual precipitation, is the driest capital in Europe. It is particularly sparse during the summer, taking the form of about two showers and/or thunderstorms during the season. Madrid derives almost 73.5 percent of its water supply from dams and reservoirs built on the Lozoya River, such as the El Atazar Dam, which was built in 1972 and inaugurated by Francisco Franco. This water supply is