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Preserved toilets, on Fort 1 from World War 1
Barra Lighthouse (Barra Lighthouse) in Salvador, Brazil
Klis fortress in croatia game of thrones watchtower shelter
Defense window
Fort Jefferson, located on Dry Tortugas Island in the Gulf of Mexico,  at the juncture of the Atlantic Ocean and The Caribbean Sea. In the State of Florida.  Formally a prison as well as a fort. Now a National Park
A recreational alley in the former moat of the Nysa Fortress, which is a tourist attraction and the backyard of the City Park.
Medieval fortress overlooking countryside
Old bunker at Rovinj coast
Santa Cruz fort of Oran, a coastal city of Algeria
1980s old Positive Film scanned, Howth marina and Martello Tower at Sandycove, James Joyce Tower and Museum, Dublin, Ireland.
An interior view of the lone building remaining in Fort Mississauga, an old Canadian fort from the War of 1812, in Niagara on the Lake.
Vashlovani tower is located in the village of Vashlovani, Tetritskaro municipality, Kvemo Kartli region in Georgia. It dates back to 1811. It should be noted that the tower was never used for military purposes, it was built as an entertainment and banquet place for Georgian aristocrats and the appropriate name was chosen - \
HELSINGBORG, SWEDEN - August 10, 2019: Ancient toilet in Konung Oscar II complex besides the fortress tower Karnanin Helsingborg, Sweden
Rifugio antiaereo di Terni
old military green rusty iron tower with embrasures on a gray concrete pillbox among the vegetation on the street
Old Bunker, Basement
Fort New Amsterdam, Suriname
Old ruins of ancient chapel at old The Master's road leading up the Velebit mountain, to Tulove grede, at sunrise strong lens flare, view on old  stone water well. Croatia
Green leaves in a hole in the wall
Kochbunker in the forest near Blachownia, an industrial part of the city of Kędzierzyn-Koźle. This bunker is an extremely popular light combat and observation bunker built by Nazi Germany both on the eastern and western border of the Third Reich during the Second World War.
Gjirokaster, Albania - June 4th 2024. A rainwater drainage system on Gjirokaster Castle roof, southern Albania. This stone gutter or stone channel drainage system includes scupper drainage, whereby wall openings allow water to exit through the parapet walls. This part of the castle dates back to the early 19th century Ottoman period, built during the extensive renovations of Ali Pasha of Tepelena
Military man standing in the tunnel alone
ruins of the Sacsyhuaman fortress
Fragments of the famous Montjuïc fortress, which was also a prison
This is one of the many openings at the Jaigarh Fort, Jaipur, Rajasthan, India. Jaigarh Fort (Rajasthani/Hindi: जयगढ़ क़िला) is situated on the promontory called the Cheel ka Teela (Hill of Eagles) of the Aravalli range; it overlooks the Amber Fort and the Maota Lake, near Amber in Jaipur, Rajasthan, India. The fort was built by Jai Singh II in 1726 to protect the Amber Fort and its palace complex and was named after him.
La Preneuse, Rivière Noire (Black River), Mauritius: British built Martello tower, dating from the 1830s, erected to protect  Black River bay. Martello towers as named after the Italian word for hammer, as in the original towers in the west coast of Italy a hammer and a bell were used to sound the alarm in case of imminent attack.
Seoul City Wall along the Heunginjimun park in Dongdaemun area of Seoul, South Korea
Alfonso Or Acougue Gate in Portugal in Valenca
Mexican fortress of San Juan de Ulua in Veracruz Mexico
Rifugio Antiaereo a Terni
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