Luciano Pia has designed 25 Verde, a house so full of trees, it’s almost like living in one. To put it in numbers, 150 trees dot the house, and there are 50 plants in the inner courtyard. These beauties can absorb 200,000 liters of CO2 and produce 150,000 liters of oxygen per hour. They even create their own microclimate, with leaves blocking pesky hot sun rays in summer, and letting in solar warmth in winter. There are 63 units in this house, which means ample children to be coaxed into taking care of the autumn leaves.