Window frame in the ruined walls of Mas del Bisbe, a 13th century episcopal residence built by Bishop Arnaud de Jardi, in Bitem, Tortosa, Catalonia, Spain. The country estate comprising hall, chapel, orchards and gardens, was built along the river Ebro so as to be easily reached by boat from Tortosa, but fell into disprepair. Buildings include a Romanesque and Gothic cloister, chapter house, a chapel with rose window, courtyard, kitchen, stable and a large wine cellar. Picture by Manuel Cohen