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Window of stone leading to nature, mountain landscape, fortress
Saint Hilarion in Northern Cyprus
Small observation window and loophole in thick concrete wall of anti-tank pillbox from 1930s on border of former Czechoslovakia
Background of the old stone wall with a loophole
Defense window
old fortifield wall small part of it with arrowslit and embrasure
Old red brick wall with a small window on an autumn day.
View people walking along 59th street, as seen form the loophole in one of the bartizans on the old city's wall, a UNESCO world heritage site. The Gulf of Mexico is visible in the background
A window in the fortress wall. The embrasure. The Bobruisk Fortress inside. High quality photo
many Sandbags of a dug in the ground to defend army soldiers from enemy raids and explosions
Wall of castle ruins, stone wall texture . \nMedieval castle ruins, old European architecture, ruined window of an old castle made of stone
Mexican fortress of San Juan de Ulua in Veracruz Mexico
Looking through the window of a medieval castle ruin to a meadow on a sunny day in springtime.
Background of the old stone wall with a loophole
Red brick wall with a small window in Kaliningrad Region, Russia.
Close-up of an embrasure, city walls of Provins, Northern France
Small square window, opening, hole in the stone wall
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
Interior of old heritage stone hut in the mountains with window
Medieval Smederevo fortress on Danube river in Serbia. High quality photo
The hole in historic the brick wall. The Coliseum in Rome, Italy.
Witness the beauty of Kokneses Pilsdrupas, where the ancient ruins offer a glimpse into Latvia's rich cultural heritage
Architecture in Copertino, Lecce, Puglia (Apulia), Italy
Trondheim, Norway - July 23, 2014: Kristiansten Fortress, located on a hill east of the city of Trondheim, Norway, named after Christian V of Denmark-Norway. It was built between 1681 and 1685
Details of the architecture of an ancient fortress
Fort Eben Emael in Belgium
Rifugio antiaereo di Terni
Close up lookout window of a British WW2 concrete pillbox / bunker.
Part of an old dirty concrete wall with a hole in it.
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