ancient wall of akkerman fortress in belgorod-dnestrovsky

akkerman ancient antique architecture arrowloop authentic bastion belgorod belgoroddnestrovkiy belgoroddnestrovsky bilhoroddnistrovski building castle citadel classical dnestrovsky dniester embrasure europe european exterior facade famous fastness fort fortifications fortress heritage historical history landmark loophole masonry medieval monument odessa old past porthole residential roof sky stone stronghold tower traditional travel ukraine vintage wall