Granite quarries of Alpedrete Curiosity · Alpedrete, Cuenca del Guadarrama, Madrid The place name itself alludes to stone, and in the 1960s more than eighty quarries were working in the municipal district; granite from here went into the monastery of El Escorial, the Royal Palace and the Nuevos Ministerios. Photo: Jesus Gaban (CC BY-SA 4.0) What to see and do in Alpedrete