The stonemasons of Los Santos Curiosity · Los Santos, Guijuelo, Salamanca Image of Los Santos, not of the place itself. Stonemasonry has for centuries been the municipality's most characteristic activity and is still today one of its economic engines: four cooperatives work the local granite, a trade passed on from generation to generation. Photo: Hovallef (CC BY-SA 4.0) What to see and do in Los Santos