designed by architect luciano pia, 25 verde is an unique residential building that has been constructed in torino, italy. the load-bearing structure is made of steel and columns shaped like tree trunks help support the 63 residential units that is covered in larch wood shingles. the concept of the scheme was to create a space with a transition between the interior and exterior, by the prominent use of foliage. illustrated in diverse ways such as green walls, planted in pots and gardens, altogether seamlessly coherently carried through the entire building. the residential lofts are all different, fitted with irregular terraces that wrap around the trees with the top floor having its own green roof. 50 trees were planted just in the court garden itself, whilst they enhance the environmentally friendly setting, the trees reduce air and noise pollution.