Spiral staircase with slide

This appears to be real, although the primary source is not given. I'm intrigued by the presence of a cat litter box under the stairs, next to the (badly-placed) foosball game, and wonder how much this is used by the feline residents. And the more I look at it, the more I think it would be easier going UP to walk on the slide rather than on those tightly-curled steps.  Credit.

A larger version of this circulated on the web several years ago, from an egregiously extravagant mansion in Indiana.