I have a long layover in Frankfurt (6 hours) and am looking for recommendations for a quick trip outside of the airport or into the city center.
We will be arriving at around 1pm to the airport and our flight does not depart until 10 pm.
I'd prefer to take the train in to avoid an expensive cab ride. Also, I am looking for any Frankfurt-based specialties, preferably under US$20 per person. I'd also like recommendations on any special bakeries that are easy to reach via train.