vertical forest buildings in milan, may 2015

above alps and architecture balcony barreca boeri building buildings business city cityscape day district downtown ecology energy europe european exhibition expo exposition famous financial forest free from garden giovanni green high horizontal italian italy landmark life lombardy look may milan milano modern nature new nuova office oxygen picture plant porta power relax resident residential rooftop save sky skyline skyscraper skyscrapers smog stefano street summer sunny sustainability the time torre tower tree trees varra vegetation vertical verticale view window world