John’s Roast Pork (address and info)
And while you're already in Philly, the roast pork sandwich -- an explosion of juice-soaked pig and sharp provolone -- is their other, less-nationally-touted -- and arguably better -- signature sandwich, and John’s just might be the original. If it’s not, it’s still the best. Oh, and they also make a hell of a cheesesteak. So maybe get both. It’s not like it’s gonna kill you. (Editor’s Note: it might kill you.)
The Clam Shack (address and info)
It’s not served in a hot dog bun, but a round roll. But other than that small twist, the lobster roll served at The Clam Shack is a simple, delicious Maine dream: mayo, a little melted butter, and fresh lobster meat. Bonus points if you’re wearing an L.L.Bean backpack as you take it down.