Any tour of Philadelphia should start with Independence National Historic Park, or INHP, “America’s most historic square mile”. Though the park covers a mere four blocks just west of the Delaware River, between Walnut and Arch streets, it can take more than a day to explore in full. The solid red-brick buildings here, not all of which are open to the public, epitomize the Georgian (and after the Revolution, Federalist) obsession with balance and symmetry.
Free tours set off from the rear of the east wing of Independence Hall, the single most important site. Throughout the day, costumed actors perform patchy but informative skits in various locations –The Gazette free newsletter has listings and a useful map.