And to awnser OP's question:
Blauwe kater, located in Leuven.
Attended some sick parties there, have a lot of great memories. It's the underground of the underground here in Leuven, excluding abondoned warehouse raves of course.
I'll stop with the pictures now, but I felt that without them my post was meaningless.
And hopefully I'll be rocking the decks there sometime in the summer. Gonna hand some promomixes out and we 'll see what happens.