I was fortunate enough to see the SMEM in person, including the playroom with lots of old (and new) synthy goodness...
Their collection is simply stunning - I was at a loss of words with the care they have for the instruments and their commitment to keeping them running as well as undertaking huge repair/restoration projects to bring especially rare instruments back to life.
The SMEM is located in Fribourg, Switzerland. If you are in the area, be sure to reserve some time to play some interesting synths!
You can book your sessions here