Zuricher Treehouse Artist Wanted

Last weekend I was walking around in Zurich when something strange captured my attention.

A trunk with a house above, is since this summer in the street of Zurich. I don’t know who is the artist, but I guess -or so I like to think- is a treehouse lover, and if not so, maybe would be great if she/he can contact me so that I can know more about it! 🙂