Bosco Verticale (Vertical Forest) is a pair of residential towers in the Porta Nuova district of Milan, Italy, between Via Gaetano de Castillia and Via Federico Confalonieri near Milano Porta Garibaldi railway station. They have a height of 110 metres (360 ft) and 76 metres (249 ft) and will host more than 900 trees (approximately 550 and 350 trees in the first and second towers respectively) on 8,900 square metres (96,000 sq ft) of terraces. Within the complex is also an 11-story office building; its facade does not host plants.
The towers were designed by Boeri Studio (Stefano Boeri,Gianandrea Barreca and Giovanni La Varra). It also involved input from horticulturalists and botanists. (Source)