Try to time your visit to Charleston to coincide with the second Sunday of the month. King St, the city's main shopping and entertainment artery, is closed off to cars from 1 PM onwards. Boutiques put out sale racks, restaurants move their tables out into the street, and street performers, such as these guys, set up shop for the many passersby.
I can think of few nicer places to take a stroll than Charleston on a warm blue-sky Sunday, along the back alleys and quiet streets lined with immaculately maintained 18th century antebellum mansions. Turning onto King St was a chance to see what all the locals were up to.