If your trip to Offenbach am Main is all sorted out but your travel itinerary is a little on the empty side, we can give you a few hints and tips.You'll have to rise and shine if you want to check out all the fascinating sights this place has to offer. Frankfurt Cathedral and Museum of Modern Art are non-negotiable. Römer and St. Paul's Church can't be missed either.Plan a stop at Frankfurt Zoological Garden. It's one attraction you'll usually find on many visitors' must-do lists. If you still have room on your schedule, Hessen Center and Henninger Turm will keep you amused too.