My final day in California was spent visiting the NASA Ames Research Centre, the Six Flags Discovery Kingdom and then watching the sunset over San Francisco and the Pacific Ocean.
The NASA Ames Visitors Centre was a disappointment, it looked like it was either temporary or extremely rundown.
In contrast after driving through most of Silicon Valley, we arrived at the Six Flags Discovery Kingdom which was a lot of fun.
The Six Flags park had a really interesting mix of both theme park rides and a mini zoo. The aquatic sections were by far the best.
Following a few hours at the park we returned to San Francisco stopping off at the Marin Headlands, Twin Peaks, and Pacifica.