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Kaliakra - long and narrow headland in the Southern Dobruja region of the northern Bulgarian Black Sea Coast,  60 km northeast of Varna with an ancient stone fortress.
Mother and children looking at Bozcaada Castle from the seaside pier
Monemvasia, Laconia, The Peloponnese, Greece, Europe
Bozcaada Castle, Canakkale, Turkey
Aerial view of Fort Alexander I near Kronstadt and Saint Petersburg
Close up detail from old ruins of ancient Roman civilization in Mersin, Mediterranean Turkey
Ancient fort on the island of Mamula in the Bay of Kotor. Montenegro. Top view. High quality photo
Kiz Kalesi (Kız Kalesi) Island in Mediterranean Sea. Mersin, Turkey. Taken via drone.
A window with a view over the massive stone walls into the blue Mediterranean sea at the Citadel of Qaitbay,built by the Mamluk Sultan Qaitbay in 1479 AD,Pharos Island,Alexandria,Egypt
Kiz Kalesi Castle, Maiden Castle - Also known as Korykos.
View from  castle walls to sea and islands under dramatic cloudy sky. Navarino, Peloponnese, Greece.
An old fort near Assos on Kefalonia island, a beautiful bay with deep blue sea, on a peaceful summer day.
Elba island, Portoferraio aerial view from old windows, Lighthouse and fort. Tuscany, Italy, Europe.
Citadel of Qaitbay in Alexandria,Egypt
View of Sa Dragonera island in Mallorca (Spain)
Alghero, Sardinien, Italien, 28. Mai 2024 - Historischer Wachturm und Kanone auf dem Wall der Bastioni Pigafetta in Alghero auf Sardinien.
Paradisiac view on the beach from Fort Jefferson, Florida, USA
Looking across old stone wall to the Aegean sea in Rhodes, Greece
View of Nafplio town and harbour, Peloponnese, Greece.
Aerial view of Maiden's Castle (Kizkalesi) in Mersin Province of Turkey.
view of giovinazzo apulia, photo as a background, digital image
Suomenlinna or Sveaborg, the sea fortress in Helsinki, Finland. An inhabited sea fortress composed of eight islands
Trondheim, Norway - May 27, 2019: Munkholmen, a former Benedictine monastery, fortress and prison. Now this small island off the coast of the Norwegian city of Trondheim has a recreational function.
Small island of Mamula with old  Austro-Hungarian fortress. Adriatic Sea. Montenegro, Herceg Novi municipality
Aerial photo from a drone of Stack Rock Fort, a small fort built on an island in the Milford Haven Waterway, Pembrokeshire, Wales, UK.
The Fortress of São João Baptista, also known as the Fort of São Filipe or Fort of Monte Brasil is a historic fortress and defensive emplacement, located in the civil parish of Sé, municipality of Angra do Heroísmo in the Portuguese island of Terceira, archipelago of the Azores.
High angle view through stone wondow on Telascica, national park in Dugi otok island, Kornati islands in background. Croatia
historic maiden's castle in Mersin
Nora, Sardinia, Italy, May 29, 2024 - The Coltellazzo Tower or Tower of Nora or of Sant'Efisio (Torre del Coltellazzo) in Nora, Sardinia.
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