If your trip to Freiburg im Breisgau is all locked in but your travel itinerary is looking a little empty, let us give you a few hints and tips.Plan a stop at Freiburg Main Cathedral. It's one attraction you'll find on travelers' to-do lists. If you still have some room on your travel itinerary, Schlossberg and Dreisamstadion will keep you on the go too.