piran city walls, slovenia

3rd 7th architecture balkans battlement battlements blue building buildings castle castles century city cloudless crenel crenellated crenellation crenellations crenelle crenelles crenels defence defensive east eastern embrasure embrasures europe european exterior fort fortification fortified fortress fortresses forts historic historical istria landmark littoral medieval monument old outdoors outside picturesque piran primorska ruin ruins september seventh sky slovene slovenian south southern stone summer sunny sunshine third tourism tower towers town towns travel trees union walls