Architect Frank Gehry will design an extension for Facebook's campus in Menlo Park, Calif. Photos of a model of the extension suggest that its exterior will be fairly plain, unlike the attention-grabbing, metallic shapes on well-known Gehry buildings such as the Guggenheim Museum Bilbao in Spain and the Walt Disney Concert Hall in Los Angeles.  Inside, the new Facebook building will be one huge, continuous 10-acre space, Bloomberg News reported.

The one-room plan is designed to allow employees to shift furniture into different configurations, depending on which teams they've formed and how they like to work, Facebook environmental design manager Everett Katigbak wrote in a blog post. Mark Zuckerberg will have a glass-walled office right in the center, Bloomberg reported.

Facebook wouldn't reveal how much the new building would cost, saying the price is in line with other office parks, according to Bloomberg. 

Construction will start in early 2013, Katigbak wrote. The building will have space for 2,800 engineers. 

As for 83-year-old Gehry himself, he told Bloomberg he has yet to master Facebook.

Sources: BloombergFacebook. Check out both links for photos.

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