No. 89 is at an almost holy place. I dare state there's no place with a larger variety of Wankel-cars than Walter Frey's collection in Germany.
This Mazda-dealer has a tremendous collection, of which even the Mazda factory is envious. In order to be complete he bought a quite a few other Wankel-cars as well, such as a Birotor, NSU Wankel-Spider, Ro80 and a M35. Through this link you will find a forum on which this article has been posted. Do some Googling and you will find even more.