The Fortress From Above, I've been a fan of fortresses and …

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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My surname translates as Head of the fortress. My family received it 1500 years ago. Here are the remnants of that very fortress, which still stands on my family's estate. : r/Damnthatsinteresting

Mountains Enthroned: Visit the Epic Castles of South Tyrol

Austro-Hungarian Fortresses of Montenegro

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12 Castles in Ireland You Cannot Miss! - Our Sweet Adventures

Mountains Enthroned: Visit the Epic Castles of South Tyrol