Quick. Name a top enterprise in San Francisco. Tourism. And what was inexplicably difficult for tourists to find, citywide? Yep, taxis. Try hailing one, no matter the time of day. Name another top enterprise? Technology. It was therefore inevitable that some genius would dream up a ride-sharing app. Uberwas predestined for local success. Uber has since spread aggressively, to 100 cities in 45 countries. Headquarters, though, remain in San Francisco—a vast space by Studio O+A.