Nesting Instincts...

Bertil Harstrom of Innednines Gruppen designed this wonderful 180sq ft, 18sq m, tree house and covered it with branches, camouflaging itso it looks like a birds nest.
Perched 20ft off the ground,
the two storey structure, round for better wind resistance, can accomodate two adults and two children.
Wing your way to www.treehugger.com for a closer look...