The burdei dates back as far as 6000 years and it’s a type of half-dugout shelter somewhat between a sod house and a log cabin, usually with a floor that’s 1 – meters under ground level. Not realy a tree house but still cool
The Witch House in Beverly Hills - saw this on a tv show Strange Spaces or something like that. I fell in LOVE with the roundness of the interior - and it's uniqueness. Reminds me of Hansel and Gretel!