Outside City Lights, the iconic San Francisco bookstore, in the alley between it and Vesuvio Cafe, resides this quote from the founder and owner of the landmark. The poem Changing Light by Ferlinghetti begins
The changing light at San Francisco is none of your East Coast light none of your pearly light of Paris
One could spend all days observing this changing light of San Francisco in the POPOS (Privately Owned Public Open Spaces) in the nearby Financial District.
These spaces range from indoor atriums to outdoor gardens and even a small redwood forest at the base of the Transamerica Pyramid building. Most had some sort of art. Some were closed on Sunday when we tried to see as many of them as possible, but that just gives us a reason to come back another time.