Tags
- A
- Abatis
- Academic
- Acropolis
- Agger
- Air-raid shelter
- Alcazaba
- Alcázar
- Alps
- Alsace
- Amba
- An
- Anti-tank trench
- Arrowslit
- Arsenal
- Bailey
- Barbed tape
- Barbed wire
- Barbette
- Barbican
- Barricade
- Bartizan
- Bastion
- Bastion fort
- Battlement
- Bawn
- Bayeux Tapestry
- Bergfried
- Berm
- Blackdown
- Blast shelter
- Blast wall
- Blockhouse
- Bomb shelter
- Boom
- Border barrier
- Border outpost
- Border Security
- Breastwork
- Bremer wall
- Bretèche
- Bridge tower
- British anti-invasion preparations of the Second World War
- Broch
- Bronze Age
- Bunker
- Burgus
- Burh
- Caër
- Calais
- Caltrop
- Cambridge Castle
- Canal
- Carisbrooke Castle
- Carolingian Empire
- Casemate
- Castellum
- Castle
- Castles
- Castles in Great Britain and Ireland
- Castle town
- Castra
- Castro culture
- Catalonia
- Cavalier
- Chalk
- Change My Mind
- Chashi
- Château
- Château de Dinan
- Chemin de ronde
- Chemise
- Cheval de frise
- Citadel
- City gate
- Civil defense
- Clay
- Coastal artillery
- Coastal defence and fortification
- Commencement
- Commencement speech
- Concentric castle
- Concertina wire
- Continuity of government
- Corfe
- Corfe Castle
- Corner tower
- Counts and dukes of Anjou
- Coupure
- Courtyard
- Covertway
- Crannog
- Crownwork
- Curtain wall
- Czech hedgehog
- David I of Scotland
- Defense line
- Defensive fighting position
- Defensive wall
- Digital elevation model
- Ditch
- DOI
- Dragon's teeth
- Drawbridge
- Duke of Normandy
- Dun
- Dundonald
- Dundonald Castle
- Dungeon
- Dzong architecture
- Electric fence
- Embrasure
- Enceinte
- English
- Entrenchment
- Fact
- Fallout shelter
- Festung
- Feudal
- Fire support base
- Flak tower
- Flanders
- Flanking tower
- Fleche
- Fortification
- Fortified church
- Fortified house
- Fortified tower
- Forward operating base
- Friesland
- Gabion
- Galloway
- Garret
- Gatehouse
- Gate tower
- Glacis
- Gord
- Gorge
- Gothic architecture
- Grad
- Gravel
- Guard tower
- Gunpowder magazine
- Gun turret
- Hardened aircraft shelter
- Harm
- Harm reduction
- Harrison Butker
- Henry II of England
- Hide
- Hillfort
- Hillside castle
- Hilltop castle
- Historic England
- Hoarding
- Holy Roman Empire
- House of Neville
- Imperial castle
- Inner bailey
- International Standard Book Number
- Island castle
- Isle of Wight
- Jagdschloss
- Japanese castle
- Jewish conspiracy
- Jews
- Kaiserpfalz
- Kasbah
- Keep
- Kremlin
- Ksar
- Land mine
- Landwehr
- Limés
- Lincoln Castle
- Lincoln, England
- Loiré
- Loophole
- Low Countries
- Lower Rhine
- L-plan castle
- Lunette
- Lustschloss
- Lütjenburg
- Machicolation
- Magazine
- Majesty
- Martello tower
- Masonry
- Medieval fortification
- Merlon
- Middle Ages
- Military base
- Military urbanism
- Mind
- Missile launch facility
- Moat
- Most
- Motte
- Motte-and-bailey castle
- Murder-hole
- My Mind
- National Heritage List for England
- Netherlands
- New
- No
- Normandy
- Normans
- Nuraghe
- Obstacle
- OCLC
- Open access
- Oppidum
- Ordensburg
- Orillon
- Oslo
- Ostrog
- Outer bailey
- Outpost
- Outwork
- Over
- Palanka
- Palas
- Palisade
- Picket
- Pillbox
- Place
- Politicized issue
- Polygonal fort
- Portcullis
- Postern
- Presidio
- Pretentious
- Promontory fort
- Qalat
- Rampart
- Ravelin
- Redan
- Redoubt
- Reduction
- Reduit
- Renaissance
- Retrenchment
- Revetment
- Rhetoric
- Rhine
- Ribat
- Ricetto
- Ringfort
- Ringwork
- Rocca
- Rock Castle
- Romanesque architecture
- Rootless
- Roundel
- Royal Archives
- Sally port
- Sandbag
- Sand Castle
- Sand Castles
- Sangar
- Schanze
- Schloss
- Schwedenschanze
- Sconce
- Shell keep
- Shield wall
- Siege
- Siege engine
- Sod
- Soil
- Speech
- Spider hole
- Station
- Stockade
- Submarine pen
- Subsidence
- Subterranean warfare
- Tenaille
- Terp
- Texa
- Think
- This Summer
- Top
- Tower castle
- Tower House
- Towering
- Trench
- Trench warfare
- Tumulus
- Tunnel warfare
- Turret
- Underpinning
- Undiscovered
- Unfree labour
- Urban guerrilla warfare
- Urban warfare
- Vallum
- Vedette
- Wagon fort
- Warkworth Castle
- Warwick Castle
- Watchtower
- Weapons Storage and Security System
- Welsh Marches
- What
- Why
- William the Conqueror
- Windsor Castle
- Wire obstacle
- World War II
- Yagura
- Yett
- York Castle
- Zeeland
- Zwinger