There is the Old City, which includes the Liberty bell, old brownstones and horse and carriage rides. There's South Street, with off-beat stores and plenty of eye candy. For more upscale shopping, there's towns west of Philly like Manayunk. And Center City has become quite the hot destination for food, entertainment and nightlife.
Best Way To Get Around: There are buses, subways and taxis readily available. In Center City, there are maps that help you locate where interesting sights are located. It doesn't hurt to have a car though, especially if you want to go to the Main Line, Delaware or the Jersey shore.