If you’re around the Freiburg area and you like Theme Parks, you really should go to the Europa Park. It is one of the biggest and longest existing Theme Parks in Europa and is a lot of fun for the small and big ones. And it is just 20 Minutes from Freiburg by car or half an hour by bus. You can also sleep there in one of the nice Hotels. The price is €47 and the queues were never longer than 45 Minutes. Although we were there on Easter Friday and always in the first-row line!
This is the Wodan Rollercoaster, all made of wood and comes up to 100km/h: