Great_Wall_of_China
Berlin_Wall
Castle
Tower_of_London
Carcassonne
Fortification
Hadrian's_Wall
Siege
Windsor_Castle
Brandenburg_Gate
Alcatraz_Island
Bethlehem
Bastille
Fort_Sumter
Acropolis_of_Athens
Edinburgh_Castle
Moat
Antonine_Wall
Alhambra
Defensive_wall
Gate
Maginot_Line
Moscow_Kremlin
Conwy_Castle
Citadel
Bunker
Fort_Knox
Barracks
Military_base
Homs
Kremlin
Siege_of_Leningrad
Wartburg_Castle
Atlantic_Wall
Hillfort
Caernarfon_Castle
Siege_of_Tobruk
Motte-and-bailey
Himeji_Castle
Führerbunker
Masada
Stirling_Castle
Beaumaris_Castle
Drawbridge
Osaka_Castle
Oppidum
Lahore_Fort
Dungeon
Tintagel_Castle
Warwick_Castle
City_gate
Corfe_Castle
Hadrian's_Mausoleum
Castle_of_Mey
Vindolanda
Blarney_Castle
Watchtower
Aigues-Mortes
Edo_Castle
Château_de_Blois
Glamis_Castle
Château_de_Montsoreau
Dunstable
Tower_of_David
Military_camp
Kumamoto-Castle
Bamburgh_Castle
Duffield_Castle,_Derbyshire
Suomenlinna
Kronborg
Monaco-Ville
Rohtas_Fort
Offa's_Dyke
Arundel_Castle
Bran_Castle
Fort_Ticonderoga
Gatehouse
Royal_Alcazar_of_Madrid
Neuf-Brisach
Kowloon_Walled_City
Blockhouse
Sinjar
Bodrum_Castle
Sudeley_Castle
St_Michael's_Mount
Hwaseong_Fortress
Hindenburg_Line
Agra_Fort
Carisbrooke_Castle
Trezzo_sull'Adda
Malatya
Roman_Walls_of_Lugo
London_Wall
Ringfort
Acrocorinth
Gingee_Fort
Petit_Théâtre_de_la_Reine
List_of_castles_in_Spain
Lichtenstein_Castle
Ehrenbreitstein
Vellore_Fort
Aït_Benhaddou
Wolf's_Lair
Shurijo
Limes_(Roman_Empire)
Tower_house
Siege_of_Sarajevo
Walls_of_Ávila
Dzong
Fort_Provintia
Alcazaba_of_Almería
Bellver_Castle
Bankstown_Bunker
Drobeta-Turnu_Severin
Strongpoint
Cathar_castles
Carrickfergus_Castle
Durham_Castle
Muiderslot
Goryōkaku
Peyrepertuse_Castle
Civitella_in_Val_di_Chiana
Slighting
Arg_of_Karim_Khan
Siege_of_Mariupol
Palace_of_Ardashir
Castles_and_Town_Walls_of_King_Edward_in_Gwynedd
Fort_Leavenworth
Dunluce_Castle
Lincoln_Castle
Fort_Amsterdam
West_Point,_New_York
Powys_Castle
Raigad_Fort
Framlingham_Castle
Saalburg
Dunstanburgh_Castle
Chester_city_walls
Făgăraș
Ashtown_Castle
Củ_Chi_tunnels
Ghal'eh_Dokhtar
Ludlow_Castle
Flame_fougasse
Sarvestan_palace
List_of_castles_and_fortresses_in_Azerbaijan
Prague_Castle
Syzran
Bothwell_Castle
List_of_walls
Château_de_Chaumont
Tughlaqabad_Fort
Bunratty_Castle
Odawara_Castle
Bishop's_Castle
Dunscaith_Castle
Bolingbroke_Castle
Château_de_Nantouillet
Fall_of_the_Berlin_Wall
Naarden
Buda_Castle
Dung_Gate
Parapet
Okayama_Castle
Pleshey
Bridgnorth_Castle
Lindisfarne_Castle
Royal_Castle,_Warsaw
Henry_Head_Battery
Belém_Tower
Siege_of_Jerusalem_(70_CE)
Saint-Martin-de-Ré
Château_d'Usson
Brampton_Bryan_Castle
Georges_Head_Battery
Danbury,_Essex
Wat's_Dyke
Krak_de_Chevaliers
Red_Bay_Castle
Fort_Ouiatenon
São_Jorge_Castle
Melilla_la_Vieja
Ninth_Fort
Deganwy
Chillon_Castle
Fallout_shelter
Aquincum
Nottingham_Castle
Fort_George,_Highland
Nagoya_Castle
Vaduz_Castle
Makurdi
Forts_in_India
Ai-Khanoum
Fort_Banks
Devín_Castle
Starved_Rock_State_Park
Crenellation
Lalbagh_fort
Hertford_Castle
Ranikot_Fort
Armeniac_Theme
Brahan_Castle
Maruoka_Castle
Wallingford_Castle
Culzean_Castle
Taku_Forts
Shrewsbury_Castle
Chepstow_Castle
Deddington
Bronllys
Fortaleza_do_Monte
Isca_Augusta
Fort_Caroline_National_Memorial
Citadel_of_Namur
Ixworth
Raudonė_Castle
Guia_Fortress
Fort_Santo_Domingo
Newcastle_Castle,_Bridgend
Echizen_Ono_Castle
Yonezawa_Castle
Chesters_Bridge
Promontory_fort
Karasawa_Castle
Rudelsburg
Shell_keep
Tour_du_Guet
Fort_Orleans
Devil's_Dyke
Cley_Marshes
Bradleys_Head_Fortification_Complex
Karacahisar_castle
Fort_Simple
Lawrence_blockhouses