Yes, indeed this inscription is strange, but there is at least one place where you can enjoy visiting several mural paintings at once: Sierra de Albarracin (Teruel) inside "Paisaje protegido de los pinares de rodeno" park.
This place is located near AlbarracĂn one of the most beautiful towns in Spain.
A panorama of a painting in http://www.albarracin.org/rutasierra/PinturasG.htm
All information in www.albarracin.org and www.sierradealbarracin.org