The Garage Lab (translated) is a small hackerspace quite close to the Chaosdorf. As the name implies, it exists in a garage complex — each unit has a garage and an upstairs office. The Garage Lab shares their unit with a co-working space upstairs — basically, they get the garage at all the times, but only the upstairs on the weekend when it is empty.
It’s been around for about 2 years and has about 40 members (~20 of which are active). To be a member it is quite cheap, only €15/month or €10/month if you are a student. They mostly focus on 3D printing and electronics.
The space has several 3D printers, a large work area, and many hand tools. They run CAD classes quite often and are hoping to expand with 3D printing classes and other technical lectures. Our guide was a cool guy named [Axel] who works as a 3D designer at his own company, but loves spreading 3D printing knowledge with the world.
Check out the tour gallery!