Visit of the B M W factory

Hello forum, I would like to visit the birthplace of “my” (our) baby. Who was already there or would be interested in 2005? Here is the link to HP : http://www.bmw-werk-berlin.de/ Would I also like to see RIESIG if you could describe something about it, if someone has already experienced such a tour. Maybe you could do some work together and get some preliminary information. If the interest would be so great that it would be for a group (min. 10-20 people) d P.S. Come from Rhineland/Palatinate (Limburgerhof near Speyer) Greeting GS Günni