Places To Visit
- Złoty Stok Gold Mine
- Abri de Hatten, Maginot Line
- Acomb York ROC Group HQ
- Alderley Edge Mines
- Aldwych Holborn Branch Line
- Anstruther Rotor Radar Station and Scotland North Zone HQ
- Archaeological Crypt of Notre Dame
- Arholma Battery
- Arras Boves
- Arras Citadel
- Barons Cave
- Battery Lothringen and Command Post
- Battery Moltke, Jersey
- Beer Quarry Caves
- Berlinertor Bunker, Hamburg
- Bethnal Green Underground Station
- Biesenthal Stasi Bunker (5005)
- Bitche Citadel
- Blisworth Canal Tunnel
- Blue John Caverns and Mine
- Bock Casemates
- Bohus Fortress, Kungälv
- Bouda Artillery Fortress
- Brede Southern Water Emergency Control Centre
- Brighton Police Cells Museum
- Broadway ROC Post
- Broch of Gurness
- Brunkebergstunneln
- Bubeneč Sewage Works
- Calke Abbey Gardeners' Tunnel
- Cardiff Castle Air Raid Shelters
- Casemate Esch, Maginot Line
- Caverne du Dragon
- Cheddar Caves
- Chislehurst Caves
- Churchill (Cabinet) War Rooms
- Civil Defence Control Centre Gravesend
- Clapham South Deep Shelter
- Coalhouse Fort
- Coleshill Replica Operational Base
- Complex Włodarz, Project Riese
- Coombe Conduit
- Coventry Cathedral Crypts
- Creswell Crags
- Cuckfield ROC Post
- Cwmorthin Slate Quarry
- Dan-Yr-Ogof Caves
- Dark Arch, Parlington Hall
- Darnley Mausoleum
- Die Klocke Ludwikowice Kłodzkie
- Dobrošov Artillery Fort
- Domqueur Muches
- Dover Castle AAOR (Casemate Level)
- Dover Castle Medical Dressing Station (Annexe Level)
- Drakelow WW2 Shadow Factory RSG and RGHQ
- Dudley Canal Tunnel
- East Pool Mine
- Eperlecques V2 Bunker
- Exeter Underground Passages
- Falkirk Canal Tunnel
- Fan Bay Deep Shelter
- Femore Fort
- Fort Amherst
- Fort Douaumont
- Fort Eben-Emael
- Fort Schoenenbourg, Maginot Line
- Fort Srebrna Góra
- Fort Vaux
- Geevor Tin Mine
- George and Charlotte Copper Mine
- George Vaults Rochester
- Giants Cave
- Golgotha Tunnel
- Goodluck Lead Mine
- Grassington Moor Lead Mines
- Great Masson Cavern
- Great Rutland Cavern / Nestor Mine
- Greenwich Foot Tunnel
- Greys Court Ice House
- Hack Green Rotor Radar Station and RGHQ
- Halliggye Fogou
- Hammarkullen Tram Stop, Gothenburg
- Hanbury Hall Ice House
- Hanička Artillery Fort
- Harecastle Tunnel, Trent and Mersey Canal
- Hartmannswillerkopf Trench System
- Hastings West Hill Cliff Railway
- Havstoudd Battery, Hemsö
- Hellfire Caves
- Hexham Abbey Crypt
- High Elms Ice House
- Highgate Cemetery
- Highgate Railway Tunnels
- Hindhead Road Tunnel
- Holmpton Rotor Radar Station
- Holy Austin Rock Houses, Kinver Edge
- Hopewell Colliery
- Hughenden Manor Ice House
- Humboldthain Flak Tower
- Hurka Fort
- Ingleborough Cave
- Jalta Hotel Prague
- Janska Underground Factory and Fuel Store
- Jersey War Tunnels (Ho8)
- Josefov Fortress
- Kanne NATO Joint Operations Centre
- Kaufmann Bunker, Hamburg
- Kelly Mine
- Kelvedon Hatch Rotor SOC and RGHQ
- Kensal Green Cemetery and Catacombs
- Kents Cavern
- Kiev Metro
- King Edward Mine Museum
- Klodzko Cellars
- Książ Castle (Zamek Książ)
- Kutna Hora Silver Mine
- La Coupole
- La Hougue Bie Command Bunker
- La Hougue Bie Neolithic Passage Grave
- La Mare Mill Resistance Nest , Jersey
- Lee Ice House
- Levant Mine
- Limpsfield School Air Raid Shelters
- Maastricht Casemates
- Maginot Line La Barbonnet Gros Ouvrage
- Maison du Fontainier
- Manchester Science and Industry Museum
- Marble Arch Caves
- Millennium Seed Bank
- Mother Shiptons Cave
- National Coal Mining Museum for England
- Newhaven Fort
- Northern St Pietersberg Quarry and Vault
- Nowa Ruda Coal Mine
- Odessa Catacombs
- Old Elbe Tunnel, Hamburg
- Oscar II Fort Gothenburg
- Osówka Underground City (Project Riese)
- Ouvrage Four-à-Chaux, Maginot Line
- Painshill Park Ice House
- Parc des Buttes-Chaumont
- Paris Catacombs
- Peak Cavern / Devil's Arse
- Pechersk Lavra (Cave Monastery) Kiev
- Pooles Cavern
- Portadown ROC Post
- Porthcurno Underground Telegraph Station
- Prague Kolektory
- Prague Metro
- Père Lachaise Cemetery
- Pétrusse Casemates
- Queensway Road Tunnel
- RAF Bentley Priory Bunker and Museum
- RAF Drytree
- RAF Laarbruch and Museum
- Ram Hill Colliery
- Ramsgate Air Raid Shelter And Scenic Railway
- Raschpëtzer Qanat
- Reigate Caves
- Rijckholt Neolithic Flint Mine
- Ronville Tunnels (Carrière Wellington)
- Royston Cave
- Rumelange Mining Museum
- Rzeczka - Sztolnie Walimskie (Project Riese)
- Saint Quirin Chapel
- Sedan Citadel
- Sedlec Ossuary
- Sherborne House Ice House
- SKF Underground Factory Gothenburg
- Skirwith Cave
- Sloup Castle
- Smoo Cave
- Snailbeach Mine
- Snobs' Tunnel, Hanbury Hall
- South Foreland RHQ Deep Shelter
- South Street Caves Dorking
- Speedwell Cavern
- St Clements Caves
- St Matthews School Air Raid Shelter
- Standedge Tunnels
- Steintorwall Bunker, Hamburg Central Station
- Stockholm Metro (Tunnelbana)
- Stockport Air Raid Shelters Chestergate
- Storråberget Fortress, Hemsö
- Strombierg Gypsum Mines
- Strongpoint Corbiere, Jersey
- Stump Cross Cavern
- Säve Airfield Underground Hangar
- Tar Tunnel
- Tessin Naval Command Bunker
- Thames Tunnel and Brunel Museum
- The Grand Redoubt
- The Grand Shaft
- The Nursemaids' Tunnel
- Treak Cliff Cavern
- Tunnellers' Memorial, Givenchy-lès-la-Bassée
- Verclut Point Casemate, Jersey
- Verdun Citadel
- Veryan ROC Post
- Victoria Tunnel
- Vimy Ridge and Tunnels
- Warren Street Underground Station
- Watermouth Caves
- Wedel Auxiliary Hospital Bunker
- Wemyss Cave
- Western Approaches Headquarters
- Wheal Martyn China Clay Works
- White Scar Cave
- Wilhemsburg Flak Tower Hamburg
- Williamson's Tunnels
- Wookey Hole
- Woolwich Arsenal Elizabeth Line Station
- Woolwich Foot Tunnel
- Wrocław Contemporary Museum (Muzeum Współczesne Wrocław)
- Wünsdorf Military Base
- Zonneberg Quarry
