In Berlin the classic remise is the way to go for car enthusiasts!
Last time visiting this place, two 959 were on display beside many other very rare cars.
I would not recommend to plan a trip to mittelmotor, as its to far from Berlin and would take at least 5hrs from Berlin without any traffic.
BTW I live as well in Berlin and interestingly enough I didn't know that we have here one more 914 (914fahrer)
Have a nice trip and enjoy your visit in Berlin
Click to view attachment BR
Benno