Treehouses are supposed to be kid territory. But we’ve been seeing enlarged backyard and woodland versions more and more. But this treehouse apartment complex in Turin, Italy by architect Luciano Pia, is called 25 Verde. That translates to “25 Green” at it stands five stories tall with 63 apartments. Pia integrated about 150 trees into 25 Verde’s eco-friendly design which means less pollution and noise for its inhabitants. The trees absorb the harmful toxins in the air and even create a “microclimate” making the apartments cooler during the summer and warmer during the winter. Ventilated walls allow sunlight to stream in during the day time and tree foliage provides protection from the harsh sun. Not exactly like living in a tree but a lot more fun that a sheetrock box.