Four medieval strongholds become the stage for faith, strategy, and siege warfare.
Examine how crusading knights and Ottoman armies fought to control four of the medieval world’s greatest fortresses. Across prolonged sieges, shifting tactics, and rival commanders, the series reveals how walls, weapons, and belief shaped legendary battles. It is a rewarding watch for anyone drawn to military history at its most intense.
Episode guide
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Frequently asked questions
Yes. Every plan unlocks the full library — including all Curiosity Originals like Besieged Fortresses, Battles of Legend — in up to 4K, ad-free, on all your devices.
Besieged Fortresses, Battles of Legend is a Curiosity Original, exclusive to Curiosity Stream.
Watch on the web, iOS and Android, Roku, Apple TV, Amazon Fire TV, Chromecast, Android TV, and most smart TVs. Start on one device and pick up right where you left off on another.
Curiosity Stream is our streaming service — thousands of documentaries and originals. The Smart Bundle is Curiosity Stream plus four other independent streaming services (Tastemade, Kidstream, Curiosity University, and SOMM TV) on a single subscription.