ancient architecture battlements castle defend defensive dordogne estate France french gatehouse grounds historical land old power protect roof secure stone strong tower turret wall windows building city defence fortification Israel Jerusalem landmark limestone modern New promenade road security strength trees walkway age ages bronze castro Celtiberian celtic cidás circular citania citanias cities cividades cliff culture defendable elevation fort fortified hill hill-fort hillfort hilltop house houses iron maritime ocean oval peninsula place refuge rock rocks saavem sea settlement walls water Apulia defense Italy Puglia buildings elements England english Great Britain LINCOLN medieval brick gaol jail beacon black Chaderton Castle control tower Hampshire Historic site lighthouse lookout observation tower Portsmouth Southsea Castle white