Flew from Singgapore to Hongkong and then Hongkong to San Francisco Airport. I stayed at Cupertino which is around 20 min ride from airport. From Cupertino, you can drive to Santa Cruz where there is a beach and a theme park. You may also drive to San Francisco City by taking the highway.

If you like nature, Yosemite National Park is not to be missed. It is around 5hr drive from Cupertino. There're great scenery and giant trees. If you stay overnight, you can see many stars on the sky. I'd recommend everyone who planned to go Yosemite to stay at least 1 night just to look at the stars. It's very beautiful.