The twin towns of Traben and Trarbach have become the wine capitals of the Mosel Valley. On the east bank of the river, above Trarbach, are the remains of the 14th-century Grevenburg Castle. On the opposite bank, above Traben, are the ruins of Mont Royal, a late-17th-century fortress built by Louis XIV. You can admire these magnificent sights without charge. Another attraction, just south of town, is the spa resort, Bad Wildstein, with its thermal healing springs.