What are some of the greatest fortresses ever built (they have been successful in repelling invaders and/or are impressive in terms of their size and ingenuity)? - Quora
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What are/have been the most impregnable fortresses in history? - Quora
What are some of the greatest fortresses ever built (they have been successful in repelling invaders and/or are impressive in terms of their size and ingenuity)? - Quora
What are some fortresses that were built but never used in war? - Quora
At what point in history were castles the best built and strongest? - Quora
What is/was the strongest fort/castle for defense from any era, preferably not English style? - Quora
What are some of the greatest fortresses ever built (they have been successful in repelling invaders and/or are impressive in terms of their size and ingenuity)? - Quora
What are/have been the most impregnable fortresses in history? - Quora
Why did castles and fortresses have star shapes with included angles in the walls and what kind of attacker would actually be stupid enough to crowd into those corners? - Quora
What are some of the greatest fortresses ever built (they have been successful in repelling invaders and/or are impressive in terms of their size and ingenuity)? - Quora
What was the most defensible castle/fortress of pre-gunpowder Europe? - Quora
