staircase inside the julius tower in the spandau citadel. berlin, germany

abstract ancient antique architecture background bastion berlin building capital citadel climb color curve denmark design detail europe european exterior flight fort fortress german germany high historic historical history house inside interior julius landmark landmarks landscape light lighthouse lindau medieval meters military museum old railings renaissance roof room round shadows shape spandau spandau39aph39s spiral stair staircase tourist tower travel view vintage wall window zitadelle