viewpoint `los cuatro postes` with background city walls of old town of avila, spain.

architecture avila background battlement blue castile castilla castle city cityscape color cuatro culture defensive draw drawing famous fort fortification fortified fortress heritage historic historical history illustration landmark landscape leon los medieval military ncient old pencil picturesque postes reconquista scenery sketch sky spain spanish stone stonewall stronghold surrounding tourism town unesco view viewpoint wall walls watercolor