is a region in the southern part of the San Francisco Bay Area in Northern California that serves as a global center for high technology, innovation, and social media. It corresponds roughly to the geographical Santa Clara Valley, although its boundaries have increased in recent decades. San Jose is the Valley's largest city, the third-largest in California, and the tenth-largest in the United States. Other major Silicon Valley cities include Palo Alto, Menlo Park, Redwood City, Cupertino, Santa Clara, Mountain View, and Sunnyvale. The San Jose Metropolitan Area has the third-highest GDP per capita in the world, according to the Brookings Institution.