<iframe width="580" height="385" src="https://www.youtube.com/embed/4EAB6ZGAqDw?autoplay=1" frameborder="0" allowfullscreen></iframe> <br>In light of the release of the film Ironclad, BBC History Magazine visited Rochester Castle to see what evidence remains of the siege today. <br><a href="https://www.youtube.com/watch?v=4EAB6ZGAqDw">source</a>