Going to Munich, what should I not miss seeing?

I still have fond memories of this when my wife and I visted Munich

https://en.wikipedia.org/wiki/BMW_Museum

That trip we visited museums in London and Paris and the BMW museum still stuck in my head. It may have changed since then, that was quite a few years ago.

Well rated at tripadvisor as well

http://www.tripadvisor.com/Attraction_Review-g187309-d190264-Reviews-BMW_Museum-Munich_Bavaria.html