basilica de saint sernin in the pink city toulouse france

building estate palace landmark church architecture facade castle abbey chapel basilica exterior view saint-sernin toulouse claims largest romanesque france saint sernin pink city europe old historic culture city christianity touristic spirituality catholic france travel religion european famous exterior unesco world heritage site heritage brick majestic large temple church pilgrimage landmark history tourism building architecture french camino santiago monument brick wall medieval gothic romanesque tower bell facade occitanie sernin haute garonne tolosa