Experience the highlights of frankfurt and the surrounding rhine valley in one day by combining two best selling tours at a discounted price in the morning take a frankfurt sightseeing tour by double decker bus to see the romer town hall st pauls church frankfurt cathedral goethe house hauptwache plaza and the european banking center then hit the road for a day trip to the unesco world heritage listed rhine valley where youll take a lovely rhine river cruise have lunch at a riverside