If you're looking for an "Off-Location" with loads of industrial charm, you're in luck.
Rathenauhalle_Halle 34 is directly connected to Rathenauhalle_Halle 33, through large industrial doors. The historic roof provides tons of daylight. One of its main features is the sheer size of the hall.
The entire ensemble offers many additional rooms for break-out sessions. Both halls provide plenty of electricity.