The Vertical Forest, two towers currently under construction in Italy's second-largest city, won't be the modern standard of urban housing, characterized by concrete, steel and glass. Instead, the residential buildings in the central Isola district will be covered in vegetation -- 730 trees, 5,000 shrubs and 11,000 plants, to be exact.Check out the photos and story at SpiegelOnline. It's an impressive idea -- a tall building with trees on every level. I'd love to live in a building like that.