Mounted on the ceiling of the Art Nouveau Lucerna Palace in Prague, by David Černý, Czech sculptor.
http://www.theguardian.com/travel/2012/aug/10/david-cerny-sculpture-walk-prague-city-break
http://www.atlasobscura.com/places/upside-down-statue-of-king-wenceslas-riding-a-dead-horse
Thank you. I was trying to make something medieval out of it, and couldn’t figure out how I’d never seen it before. Since it’s only from 1999, I don’t feel so bad. Fifteen years behind I can handle.