When it comes to day trips, there aren’t many cities that can measure up to Philadelphia. (I live within easy driving distance, so I’ve had lots of short visits to Philly.) To start with, it has an extremely walkable downtown where you can follow in the footsteps of the Founding Fathers. Tree-lined Benjamin Franklin Parkway is dotted with three world-class museums and ends with a monumental staircase made famous by the movie Rocky. And then there’s the food, which ranges from grab-and-go cheesesteaks and hoagies to multicourse meals prepared by award-winning chefs.