By Coach, Rail or Air. Discover the best of the Rhine and Moselle as you voyage from Koblenz to Boppard. Departing August & September 2010. Sit back on the sundeck and admire magnificent cliff top castles, pretty riverside villages and half timbered houses and lush vineyards clinging to the hillsides off the river valley. Our journey will take in all the highlights that these great Rivers have to offer.