What is San Francisco’s most underrated building?

Welcome to Friday Open Threads, wherein we ask readers to speak up about topics of interest, beauty, disgust, horror, etc. Have something you want discussed? Let us know.

Over the years, we’ve asked readers to chime in on San Francisco’s best buildings, the SF building with the most gorgeous interiors, and even the city’s ugliest buildings. Today we want you to weigh in on the abundance of San Francisco’s buildings—specifically, the ones you think are underrated.

Which is to say, it’s not time to talk about how much you love the Transamerica Pyramid, or the Shell Building, or even the Conservatory of Flowers; we want to hear about the structures you believe have architectural merit, but don’t get the attention they deserve. (This idea, by the by, was inspired by our sister site Curbed NY.)

If you have a favorite building that everyone else thinks of as boring, or if there’s one that’s always overlooked in favor of cool kids like 140 New Montgomery, now is the time to make your voice heard and push your little-known favorites to the forefront.

Comment below. We’ll round up the answers for a post at a later date.