why is Golden Gate called Golden Gate?

It's somehow after the passageway discovered by an explorer

The Golden Gate (in Spanish, Golden Gate) is a suspension bridge located in the United States, California, linking the San Francisco Peninsula to the north with the south of Marin County, near Sausalito. Golden Gate is also the name of the strait on which the bridge is built, and receives its name from the Strait in Constantinople, also called the Golden Gate, as it communicated Europe with Asia