What: Yelp, restaurant rating website
Where: South of Market, San Francisco
Yelp teamed up with Studio O+A to redesign their headquarters back in 2010. Studio O+A is known for designing office spaces, including the ones for Facebook. Yelp's office space reflects their overall vision of a large community where people can express their opinions. The space includes a bike lobby, custom yelp wallpaper, and a killer view.
[Yelp Website]
Yelp Wallpaper: "My social life is TEN TIMES more exciting since yelp came into the picture."[Photo via][Photos via]