Oulu's youth and culture center Nuku (= Nuoriso- ja kulttuurikeskus). Ironically Nuku also means in finnish an order to sleep. There's dance, teather, art and other various things under that roof.
I've been there couple of times in Japanese seminars and some times I've just hanged out in the cafe.
Update - They changed the name in to Valve... that means something like being awake