This year in 2010 the Nena 2010 "Made In Germany" tour began at O2 World in Berlin on April 04 and wraps up on .. well we can't really tell. The fabulous 2010 tour bus wound its way across Europe for auditorium and open-air concerts in the best venues in Europe (they are all good, and they are the best when they have to best performers). Nena is always "on the road", kinda like Willie Nelson. You have to love what you do and do what you love to keep that kind of schedule. The main thing is, if you are going to Europe, just lay out an itinerary so you can attend Nena concerts and appearances. You'll have a definite set of interesting places to go that may not be on the usual tourist lists and your experiences will be unique.
The best we can do here is list the schedule pages you need to look for on nena.de and help with some of the information translation - language, culture and operations.