Fortress from Ottoman, Byzantine eras to become Istanbul's most glamorous cultural venue

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Koblenz, Germany. 30th Apr, 2020. Ehrenbreitstein Fortress, the largest part of the major Koblenz fortress, is situated high above the Rhine with a view of the city and the Deutsches Eck at

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Erebuni Fortress: Visiting the Ancient Foundations of a Modern Capital - Sailingstone Travel

Belgrade Fortress - Wikipedia

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Bilhorod-Dnistrovskyi Fortress – the largest fortress in Ukraine · Ukraine travel blog

Mont-Saint-Michel, France: An Island Fortress in the English Channel