This is the monumental entrance to the famous Japanese Tea Garden located in Golden Gate Park.
The description states:
ENTRANCE TO THE JAPANESE TEAGARDEN
In famed Golden Gate Park in San Francisco. This tea garden is an actual duplication of an authentic Japanese garden. With its granite shrine and arched bridge it is truly an exciting part of San Francisco.
–The picture shows that the gate has suffered some neglect, as tiles are shifting from their place on the roof. This has been repaired along with extensive renovations throughout the garden in the intervening years. This care likely dates to the 1950s.