Birthday Party Ideas for a 4yr old boy - Berlin

Hi

My son is turning 4 in November and we promised him a birthday party this year. Anyone have any ideas for a venue or activity (that you can do in cold weather)? The invite list is about 8 rather rambunctious boys and our apartment is too small and loud to host. We were thinking lego land, but it's pretty far away (we're in Wannsee) and can get rather expensive. In the States we would do Chuck_E-Cheese (I know, I know, but it works and is easy). Thanks in advance for any suggestions.

Have the party at Bongobär on Leibnitzstr. in Charlottenburg. They have an amazing indoor playground and good food. The phone number in the link works, but the web site is apparently under construction.

you can do birthdays at the domaine dahlem farm, complete with tractors, live stalk, barns etc..
http://www.domaene-dahlem.de/kinder/geburtstag_set.htm

My friends in Berlin also recommended the Domaine Dahlem farm, said the kids loved it and its also a great place for adults. Enjoy