Rumelihisarı (Rumelian Castle) is a fortress located in Istanbul,
Fort Denison is a former penal site and defensive facility occupying a
The Pucará de Tilcara is a pre-Inca fortification or pucará located o
Fort Scratchley was a coastal defence installation at Newcastle, New
Ruthven Barracks near Ruthven, Highland in Scotland are the smallest
The Tangansky Protected Command Point, also known as An-02 (1947),
The York Cold War Bunker is a two-storey semi-subterranean Cold War
La Coupole (English: The Dome) was a Nazi Germany bunker constructed
Cytadela (Polish for Citadel) is a 19th-century fortress in Warsaw,
The Babruysk Fortress (Belarusian: Бабруйская крэпасць,
Führerhauptquartier Werwolf was the codename used for one of Adolf
Sungbo's Eredo, a rampart or system of walls and ditches that are
Breakwater Battery, was a coastal defence battery at Port Kembla,
The V-3 (Vergeltungswaffe 3), also known as the Hochdruckpumpe ('High
Smiths Hill Fort was a fort at North Wollongong, New South Wales,
The Magnetic Battery, Fort War or The Forts, as it is commonly
Drummond Battery was a counter bombardment battery at Port Kembla,
The Hexamilion wall (Greek: Εξαμίλιον τείχος, 'six-mile wall') is a de
The Green Street bunker at West End (Townsville), Queensland,
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
Tri zamka i bedemi Bellinzone (talijanski: I tre castelli e la cinta
The Longues-sur-Mer battery was a World War II artillery battery
Brestska ili Brestovska tvrđava (bjeloruski: Брэсцкая крэпасць
Hanging bunker at Devil's slide is an abandoned military triangulation
The Alcazaba is a Moorish fortification in Málaga, southern Spain.
Tvrđava sv. Nikole pomorska je obrambena tvrđava smještena na ot
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