This is the city associated with Martin Luther (1483-1546), leader of the German Reformation, and it attracts pilgrims from all over the world. Wittenberg's other famous son was humanist Philipp Melanchthon (1497-1560), a Protestant reformer and scholar, and a friend of Luther's and later of Calvin's. Luther and Melanchthon are honored with statues in front of the Rathaus. Wittenberg is a handsome enough city, but a stop here isn't a must unless you're particularly interested in Luther.
