See the highlights of Frankfurt and visit stunning Eltz Castle in one day with this Frankfurt Super Saver, which combines two best-selling tours at a discounted price. Start with a Frankfurt sightseeing tour by double-decker bus to see Römerberg square, St Paul's Church, Frankfurt Cathedral, Hauptwache Plaza and more. Spend the rest of the day exploring the fairy tale–like Eltz Castle, one of Germany's best-preserved fortresses, and then finish with a 3-course dinner at a Rhine River restaurant. Numbers are limited to 14 on this small-group tour, ensuring personalized attention from a guide. ''