The York Cold War Bunker is a two-storey semi-subterranean Cold War
Rumelihisarı (Rumelian Castle) is a fortress located in Istanbul,
The Tangansky Protected Command Point, also known as An-02 (1947),
La Coupole (English: The Dome) was a Nazi Germany bunker constructed
Fort Denison is a former penal site and defensive facility occupying a
The V-3 (Vergeltungswaffe 3), also known as the Hochdruckpumpe ('High
Kolomna Kremlin is a very large fortress in Kolomna, Russia. The stone
The Halászbástya or Fisherman's Bastion is a terrace in neo-Gothic a
The island of Spinalonga (Greek: Σπιναλόγκα), officially known as
Tvrđava svetog Mihovila u Šibeniku (od 1990-ih) , razg. Tvrđava sv
The Three Castles of Bellinzona are a group of fortifications located
The Longues-sur-Mer battery was a World War II artillery battery
The Pucará de Tilcara is a pre-Inca fortification or pucará located o
Brest Fortress (Belarusian: Брэсцкая крэпасць, ISO 9: Brèsckaâ krèpas
Hanging bunker at Devil's slide is an abandoned military triangulation
Fort Scratchley was a coastal defence installation at Newcastle, New
The Alcazaba is a Moorish fortification in Málaga, southern Spain.
St. Nicholas Fortress (hrvatski. Tvrđava Sv. Nikole) is a fortress
Soviet Nuclear Bunker 'Pansionat' is a tourist attraction, one of the
The Klis Fortress (hrvatski. Tvrđava Klis) is a medieval fortress
Citadella is the Hungarian word for Citadel, a kind of fortress. The
Rocca Calascio is a ruined mountaintop fortress or rocca in the
Imperialfästningen (hrvatski. Utvrda Imperijal) är en fästning i Du
The Torry Battery is an artillery battery near Torry in Aberdeen,
Daugavpils Fortress, also known as Dinaburg Fortress, is a fortress in
Ruthven Barracks near Ruthven, Highland in Scotland are the smallest
The Biertan fortified church (Romanian: Biserica fortificată din
Hwaseong (Brilliant Castle/ Fortress), the wall surrounding the centre
The Sighisoara Citadel is the old historic center of the town of
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