Not everyone is a Facebook fan, particularly now with their seemingly porous security. That said, if you are a fan of design and Frank Gehry specifically you will want to take a look at the latest video from the B1M (recently my favorite YouTube channel). 

The video gives good insight into the second, third, and touches on the fourth additions to the Facebook HQ in Menlo Park. I find it particularly interesting how the design of even the cutting edge, pseudo-hipster tech industry is evolving, and thankfully moving more toward intelligent and realistic efficient design.