Los Cuatro Postes (The Four Posts), 16th century; City Walls, 11th-14th century, with Cathedral, in the distance (looking West), Avila, Castile and Leon, Spain. This simple shrine, a cross covered by a canopy supported by 4 Doric columns, marks the place where St Theresa's uncle prevented her and her brother from seeking martyrdom in battle with the Moors. Picture by Manuel Cohen