Hello Financial District
Skyscrapers and suits might not spring to mind when you think about San Francisco, but in the Financial District, that's exactly what you get. You certainly see a different side to the city than you do in the likes of Nob Hill or The Castro, with skyscrapers and business lunches replacing the indie retailers and hipster coffee shops. The most famous landmark in the Financial District is the Transamerica Pyramid, which when built in 1972 was one of the five tallest buildings in the world. You'll have to make do with gazing up at – rather than down from – this skyscraper.
Never mind, though, as there's plenty of other things to see at ground level. The casual restaurants and food trucks give you plenty of options for lunch, or, for the best of both worlds, check out the stalls at the popular Ferry Building Marketplace. (You can find a great farmer's market here, too.) Much of the rest of the city center is within walking distance, and so you never have to travel too far when you want to go somewhere a bit more low key. And think about this: as modern and flashy as the Financial District might seem today, the area can actually lay claim to being the oldest in the city.