Silicon Valley is a nickname for the southern portion of the San Francisco Bay Area, which is located in the part of the U.S. state of California known as Northern California. It is home to many of the world's largest high-tech corporations, as well as thousands of tech startup companies.
25 Epic Things to See & Do in San Francisco - Must-See List
SAN FRANCISCO CITY: THINGS TO DO. #1. Golden Gate Bridge, San Francisco Bay. The iconic Golden Gate Bridge is easily one of the most instantly recognizable bridges in the world. It is certainly the most adored bridge in California, giving it the top slot on our list of 25 Things to do and see in San Francisco. This bright red suspended bridge can generally be walked across in under an hour.