I went on a photo walk today, at least until giant clouds ruined all the good lighting that I was out to take advantage of. My wanders took me past the west-facing side of the Bill Graham Civic Auditorium, where I was delighted to see a new art installation. Well, new to me: it's been there since spring.
It's by Joseph Kosuth, and this link (sf.curbed.com) has a very charming image of it in the evening, as well as some background information about how it was planned and funded.