citadel in berat castle, albania

berat castle albania ruins architecture citadel buildings ancient old historic historical heritage europe travel tourism landmark arches unesco world site fortified fort fortification fortress walls walled stone east south byzantine ottoman medieval kalaja hill hilltop kala archaeological archaeology arch arched round roundarched opening vault vaulted stronghold albanian european balkans central eastern southern 13th thirteenth century inside interior defensive strength strong defence june summer destination attraction window blocked filledin filled overgrown