years and years ago there was a "thunderdome on tour" at the venue and several other bigger events...
that venue is part of the german hardcore-history.
its a very nice and brilliant location with a bombastic sound and light(laser, videoscreens etc).
very luxury inside, 5 floors(in & outdoor) on two stages, big free car park in front..GREAT!
you might check also:
http://www.nightlife-discothek.de/main.php