When Martin Luther's bold protest was nailed to the doors of the Castle Church, in Wittenberg, Germany, he little realized the storm that would break as a consequence. The event shook the medieval church to its foundations and changed the religious and political world forever. This video, filmed on location in Germany, takes you to the key places in Luther's life. To Eisleben, his birthplace; to Erfurt, where he studied; and to Wittenberg, the setting for most of his life's work. In Wittenberg you'll see the famous doors where his 95 theses were nailed up, the church where he preached, the university where he taught, and the building where he lived.