Facebook's Rooftop Forest

摘要

Building 20 at Facebook's Menlo park headquarters, also known as MPK 20, was designed by Frank Gehry and opened in March 2015. The 9-acre garden on the roof features roughly 360 trees and 110,000 shrubs, a half-mile walking loop and a meeting room. The irrigation system is a typical drip and sprinkler system that sits between the 18 inches of soil and 12-48 inches of extended polystyrene geofoam, which provides a lightweight base to anchor trees and sculpt hills and other landscaping features.