Tree houses are not the normal, small wooden things stuck up in trees by a few nails. They are now coming into the 21st century, becoming buildings and homes themselves. Architects have discovered the beauty of tree houses and have decided to expand them. This one has become a huge, 3 storey tree house, with normal flooring you'd see in any home and 'outdoor' lights. The actual trees go through the flooring rather than around them, so the floors have holes with trees coming through them. The walls vary in transparency, letting some light in and some out. The house doesn't contain just wood, but windows and lights and other things as well. Beautiful!