It's no longer "the Gehry building" -- Facebook's newest Menlo Park office has been dubbed "MPK20" as employees start moving in this week.
Designed by world-renowned architect Frank Gehry, the 433,555-square-foot west campus sits at 1 Facebook Way (formerly known as a portion of Constitution Drive), across the street from the main east campus. A pedestrian-bike tunnel runs underneath the Bayfront Expressway to connect the two campuses, and is also now open for business, according to the social media company.
Construction of the west campus started in September 2014 and was done to meet LEED Gold environmental standards, according to Facebook. Design features include an insulated roof to reduce heating and cooling costs and etched windows to deter birds from crashing into the panes.
The building is expected to eventually hold 2,800 engineers in one large, open room, a layout that emphasizes space and connection, according to the designers. "It will take us some time to grow into the space," Facebook sources said.
It's also not done: "The building itself is pretty simple and isn't fancy. That's on purpose. We want our space to feel like a work in progress. When you enter our buildings, we want you to feel how much left there is to be done in our mission to connect the world," CEO Mark Zuckerberg posted on his Facebook page.
The outside looks fancier than the inside: The rooftop was turned into a 9-acre garden complete with a half-mile walking trail, outdoor work spaces and 400 trees, according to Facebook.
Mr. Gehry described the building as a "remarkably human environment" in a press release, and said he was very proud of how the collaborative project turned out. "It is not a grand design statement and it has a toughness and a rawness that reminds me of the work I was doing in the early part of my career," he wrote.