Wittenberg is famous for its close connection with Martin Luther and the Protestant Reformation, for which it received the honorific "Lutherstadt". Several of Wittenberg's buildings associated with the events, including a preserved part of the Augustinian monastery in which Luther lived, first as a monk and later as owner with his wife Katharina von Bora and family, considered to be the world's premier museum dedicated to Luther. Wittenberg was also the seat of the Elector of Saxony, a dignity held by the dukes of Saxe-Wittenberg, making it one of the most powerful cities in the Holy Roman Empire.