What are some of the best fortified historical fortresses in your opinion? - Quora

What are some of the best castles to visit in the USA and why? - Quora

What is your favorite European castle? - Quora

What would the closest thing to a perfect late medieval castle look like? - Quora

What are some of the best fortified historical fortresses in your opinion? - Quora

What are some of the best fortified historical fortresses in your opinion? - Quora

What are some examples of military forts? - Quora

What was the military or strategic value of a fortress or other military fortification? - Quora

What's the difference between a castle and a mansion? - Quora

What happened to all the abandoned castles from medieval times? Why were so many castles built that were never used or conquered? - Quora