Extraordinary alpine villa in Italy is heated and cooled by the Earth

The house is rooted to the hillside near the Passo del Cavallo pass in the Alps. A suspended metal staircase cuts through the grassy slope and connects a small entry area to the house above. The glazed entrance is sheltered by a broad window and a terrace. Related: A Gorgeous 19th Century Alpine Farmhouse Restored with Hand-Carved Wooden Cladding "We are still in a place close to the urban noise but at the same time far away, where the aroma of mountain herbs and grazing sheep seem to have...