Facebook is expanding, and they have just announced that the expansion is being designed by one of the modern icons of architecture.

Frank Gehry will be behind the new addition to Facebook’s Menlo Park campus. You may know Gehry as the guy who built the Guggenheim Museum in Bilboa, Spain and the Walt Disney Concert Hall in L.A.

Gehry, who is known for his ability to create beautiful yet functional spaces, will bring that talent to the new Engineering building. Facebook says that it will be able to house 3,400 employees when completed.

“It will be a large, one room building that somewhat resembles a warehouse. Just like we do now, everyone will sit out in the open with desks that can be quickly shuffled around as teams form and break apart around projects. There will be cafes and lots of micro-kitchens with snacks so that you never have to go hungry. And we’ll fill the building with break-away spaces with couches and whiteboards to make getting away from your desk easy,” says Everett Katigbak, Facebook’s Environmental Design Manager.

The outside will feature an eco-friendly space filled with trees and a rooftop garden on top of the structure.

Employees will be able to travel between the current campus and the expansion via underground tunnel (cool).

Facebook says they plan to break ground on the addition in early 2013.