Open since 1924, and probably serving USC’s hungry students for almost just as long, The Original Pantry Cafe is a DTLA landmark. While it’s no longer open 24/7, you can still eat here during breakfast and lunch most days of the week. It’s also very tiny, and the wait for a table can be long on Sunday mornings. The good news is, once you're finally inside, you'll eat diner food with just the right mix of salt, grease, and sugar to calm your nerves.