Jennifer J.
Yelp
The Ferry Building is one of my very favorites places to visit...ever. Not just in SF, but just plain anywhere. It's historic, vast, and full of amazing food, drinks, cheese, beer, wine, books, ephemera, doo-dads, knick knacks, bric-a-brac, and all the things that make this city diverse and amazing.
On my most recent visit to SF, my hotel was nearby so I ended up visiting the Ferry Building twice. The first was for a tasty takeout lunch on my first day in town. I grabbed some sushi to-go and brought it back to my hotel room (which, coincidentally, also had a view of the Ferry Building). The next day, I headed back for lunch again, enjoying a hot dog outdoors at the Ferry Building's resident brewhouse. It was a great place to eat, sip, and people watch on a busy weekday afternoon in the city.
The Ferry Building also, not surprisingly, has ferries. You can take one across the bay to a few different locations. Years ago, I rode a bicycle from the city all the way to Tiburon, and took the ferry back. This is back when I did things like ride a bike to Tiburon, take a ferry back, and not die due to the physical exertion!