I think I'm gonna puke.
There is nothing to indicate that this guy is a Nazi. If the city felt it had historical significance then they should have preserved or developed it.
It's real estate, no more no less.
I don't see anything really wrong with it at all. Use it for something useful.
I was took a day trip to Berlin back in August and was on a tour that took us to the site where Hitler's body was found. It is a children's park now. The reason for this is that they did not want to leave the place intact the way it was because of a fear of neo-Nazis treating it as some sort of sick shrine. I happen to agree with that reasoning.