Koblenz

This 2,000-year-old city at the confluence of the Moselle and Rhine rivers is the cultural and business centre of the Middle Rhine region. History buffs can explore the Neoclassic Residence Schloss, the Prince Elector's palace; the Deutsches Eck, a settlement founded by the German Order of Knights in 1216; and Ehrenbreitstein, the oldest fortress in Europe.