http://base.google.de/
Again, no base.google.(ch|at) ... Gnarr :)

http://www.google.co.uk/base works too

I speak about it 2 days ago, because it was official :
http://www.zorgloob.com/2006/05/google-base-uk-et-de.asp

Official post:
http://googlebase.blogspot.com/2006/05/google-base-for-uk-and-germany.html