Graced with a stunning location on the confluence of the rhine river and moselle river the historic city of koblenz makes for a wonderful day trip from frankfurt highlights on this small group tour include a guided visit to ehrenbreitstein fortress europes second largest preserved fortress and a cable car ride over the unesco listed rhine gorge enjoy free time to explore koblenz at your leisure and top off your experience with a typical german dinner on the banks of the rhine numbers are