abbey of saint-austremoine. issoire. france

zodiac motives geometric buttresses buttress cornice abbey adornment ancient apse apses arch arches architecture art artistic ashlar ashlars austremoine auvergne basilica bracket brackets building capital capitals church construction decoration europe european facade facades france heritage issoire medieval middle age monument ornament romanesque saint stone unesco world union wall walls window windows saintaustremoine 12th century detail signs historic city