Buzz·Updated on May 13, 2020. Posted on Feb 11, 2009Invisible Treehouse HotelThis is a concept for a "tree hotel" designed by the Swedish architectural firm Tham & Videgard Hansson.by Jack ShepherdBuzzFeed StaffFacebookPinterestTwitterMailLink geekologie.com Honestly, they had me at "tree hotel". But the thing is also made of mirrors and thus totally invisible. OK, not invisible at all. But it blends into its surroundings in a very cool way. Click through for more pics and schematics.