The driftwood treehouse on Hokkaido Island, Japan

 
   
 
 

Takashi Kobayashi is a treehouse builder who lives in Kamakura, Japan. He built this treehouse using driftwood gathered on the island of Hokkaido.
 
 

Treehouses around the World

 
   

   
       

The oval birdís nest treehouse is 12ft (3.6m) tall and 9ft (2.7m) in diameter reached by a spiralling staircase 18ft (5.5m) tall. The treehouse is owned by the town of Kamishihoro for the people of Hokkaido.  Takashi built his first treehouse in 1993, on a piece of land he rented in Tokyo; since then, he has built 25 more, most of them for schools.