Welcome to the GPS-enabled professionally-narrated offline driving tour of the technology capital of the world Silicon Valley, California by Action Tour Guide! Are you ready to turn your phone into a personal tour guide? This app offers a fully-guided experience - just like a local giving you a personalized, turn-by-turn, fully-guided tour. Silicon Valley: Explore the birthplace of tech! Drive through Silicon Valley visiting the headquarters of tech giants like Apple, Google, Facebook, Tesla,