31. PASSAGES. Baltimore. Baltimore is visually complex, but also an unusual crossroads: not quite the South, but not Northeastern either; a heavy industry town busy reinventing itself, but also a nautical culture (Chesapeake Bay is the largest estuary in the US). It was once the second leading port of entry for immigrants, and is one of only 41 independent cities in the USA. Possibly the most interesting (and maligned) city on the East Coast.