Zanshin, I walked through this park about 30 years ago to get from my hotel to Schwabing. I recall asking the desk clerk if it was safe to walk there after dark and he looked at me like I was crazy - "of course it's safe to walk in the park anytime" he said. I couldn't remember the park's name, but something in the back of my mind told me there was an exotic structure there and hence my guess.
Well, on with the show. I scrounged this picture up in my disorganized sd cards, but I won't have many follow-ups so here goes.