Check out the new green roof at the Academy of Sciences in Golden Gate Park.
From there you can walk across the concourse to the museum or the Japanese Tea Garden.
Also within a stones throw is the Botanical garden right across the main street.
There are lots of iconic landscape architectural sites to visit such as Levi plaza, , Ghirardelli Square , Alcatraz Island( Halprin) , The Presidio , and the Embarcadero. If you hit the Embarcadero at the right time you’ll might catch the weekly farmers market which is terrific, it is in the ferry building.