From the outside, you can call it simple houses of the Austrian architect Bernardo Bader "typical", but inside, the tree house is ideal for creative minds! Located in the picturesque village Bizau in the Austrian Alps, this mountain lodge is home to day care for children. The brick façade conventional no trace of what is inside, where the interior open concept is simple cool and modern, but with nature at every turn. Lots of windows capturing uninterrupted views of the Alps, revealing sunny pine wood ash clad interior. From floor to ceiling, wood - is only part of the house eco-sustainable, which also boasts passive innovations that increase energy efficiency - as supplied by local craftsmen.