Barracks of the Royal Walloon Guards Monument · Leganés, Área Metropolitana, Madrid Image of Leganés, not of the place itself. Built in 1783 on the orders of Carlos III under the direction of Francisco Sabatini to quarter the Walloon Guards, the great brick and granite barracks has housed departments of the Carlos III University of Madrid since the end of the 20th century. Photo: RicardoAlbendea (CC BY-SA 4.0) What to see and do in Leganés