I was a bit surprised to find that Bellevue Pallace (residence of the German head of state) isn't even listed in the German wiki as an example. For me, that was

I was a bit surprised to find that Bellevue Pallace (residence of the German head of state) isn't even listed in the German wiki as an example. For me, that was the first building that came to my mind. The Ha-Ha there also has the benefit that you have a nice incline to lay on and look at the protected estate.