This is the city of San Francisco - and no type of "valley", Silicon of otherwise.
The term Silicon Valley refers to a corridor south of San Francisco, that runs along the peninsula, adjacent to the coastal range, south to the general San Jose Metro area. It is separated from "The City" by a range of tall hills and millions of dead bodies*.
Geography kids!
* https://ww2.kqed.org/news/2017/10/26/why-are-so-many-dead-people-in-colma-and-so-few-in-san-francisco/