My partner went for a ride in Dusseldorf with a cousin's hubby who has become fairly good as a cyclist.
He was taken to a 3-LEVEL bike store that he knows for certain we could have spent well over 1/2 day in there happily. He was overwhelmed.
http://www.biketown.de/
Now if someone could tell me where the women's stuff is in the online catalogue..I'm curious.