Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia ...

click image for close-up This map shows Philadelphia as it appeared around 1796. By then the commercial core of the city, stretching along the Delaware River from Spruce to Vine streets ...

But because Philadelphia is such a popular spot, the usual driving frustrations apply: an unfamiliar map, expensive parking (not to mention spots that require parallel parking) and a profusion of ...