Photo Gallery: A Vertical Forest in the City 02/28/2013
 The Vertical Forest, two towers currently under construction in Italy's...
Stefano Boeri/ Gianandrea Barreca/ Giovanni La Varra

The Vertical Forest, two towers currently under construction in Italy's second-largest city of Milan, will be covered in vegetation -- 730 trees, 5,000 shrubs and 11,000 plants, to be exact.