Host Dan Snow shares the legend of an apparent cannonball from the siege of 1410 still stuck in the wall of Malbork Castle's summer refectory. This projectile is believed to have been fired across a river, over at least one set of defensive walls, through a window and into the wall. The stronghold, believed to be the largest brick castle in the world, was built by Christians during the Baltic Crusades. Historically known as Marienburg, this fortification was besieged by Polish and Lithuanian forces after the Battle of Tannenberg and defended by Heinrich von Plauen.
Dan's vlogs are released every Wednesday on YouTube, unveiling details related to the stories that will be profiled in the Battle Castle shows.