APRIL 9: MIDDLE RHINE & KOBLENZ
Cruise past hilltop castles along the Rhine; this stunning stretch of the river is a UNESCO World Heritage Site. You pass the Lorelei Rock, which marks the river’s narrowest point; the rock is named for a local legend about Rhine Maidens who lure sailors to their doom. This afternoon, stop to visit Marksburg, the only Rhine castle never destroyed. Rejoin your ship in Koblenz and dine aboard.