Eisenach, Germany

Once a center of the East German auto industry, Eisenach is not quite as charming as some other German cities, but it does have one of the region's finest castles and half-timbered houses ring its ancient market square. Most visitors come to Eisenach for its historical significance: Martin Luther lived here in the 16th century - first in town at the Lutherhaus and later in disguise as "Knight George" in the Wartburg Castle - and Bach was born here.