Visit two german castles in one day on this must do day trip from frankfurt with a tour of heidelberg castle and the citys old town included plus a visit to schwetzingen castle the day trip is the perfect excursion for lovers of history architecture and scenery alike take the scenic route back to frankfurt traveling along the german wine road and admiring idyllic scenery and picturesque towns like neustadt numbers are limited to 14 on this small group tour ensuring personalized attention