Near Neuss, a pleasant drive southwest from Duesseldorf, art is housed in art atop a former NATO missile base.
Japanese architect Tadao Ando transformed the space with a building he was commissioned to design, not for any specific purpose, according to our artist/guide Jens Stittgen, but to be a memorable space that could hold things.
It is, from the walkway lined on one side with Japanese cherry trees to the smooth as silk special concrete - pumped up not down - of the building.
A long ramp and stairs lead down to a gallery of more contemporary work.
Tip: The stairs aren't bad, but I recommend the ramp.
The result is a walk through the glorious works of nature with stops to gaze on the works of man, from the Chinese Han dynasty and native Micronesians to classical and contemporary European work.
Warning: Levelers, you will have to walk over terrain with fairly gentle slopes, but to get to and from it there are formidable stairs - 45 steps that are steep and a bit slippery when wet. If you can manage them the experience is worth the effort.
However it is arranged, the art is well worth your time. In the works on paper building, I was delighted to find 17 Rembrandt etchings, two Matisses, a wall of Cezanne watercolors, and a handsome Gustave Klimt.
Have you been to either of these museums? What did you think of them? I'd love to know.