Facebook expands Menlo Park headquarters

Employees walk along the green roof at the new Facebook Inc. Frank Gehry-designed MPK 21 office building in Menlo Park, California, U.S., on Wednesday, Aug. 29, 2018. Facebook Inc. plans to redevelop whole swaths of the land it holds in the Silicon Valley city, potentially doubling its workforce there over the next decade to 35,000 people - more than Menlo Park's current population. Photographer: Michael Short/Bloomberg

Facebook Inc opened its newest building at its Menlo Park headquarters as the world's largest social network continues to hire aggressively to support its scorching growth.

Designed by celebrated architect Frank Gehry, the building, MPK 21, has a 3.6-acre rooftop garden featuring over 200 trees and is built with environmentally friendly materials, the company said in a blog post  on Sept 4.