A piano keyboard stairway, way to go

from w
My niece Bron posted on Facebook about the piano stairs and I think it is just a gorgeous idea. It's in Stockholm apparently and I'd choose stairs any day if they were like this one.
Piano stairs - TheFunTheory.com - Rolighetsteorin.se
1 min 48 sec - 7 Oct 2009 -
We believe that the easiest way to change people's behaviour for the better is by making it fun to do. We call it The fun theory. Do you have an idea that ...
www.youtube.com/watch?v=2lXh2n0aPyw

If video doesn't work, then just google 'piano stairs' and there are several sites.