Society Hill, an elegant residential area west of the Delaware and directly south of INHP, spreads between Walnut and Lombard streets. Though it is indeed Philadelphia’s high society that lives here now, the area was named after its first inhabitants, the Free Society of Traders. After falling into disrepair, the Hill itself was flattened in the early 1970s to provide a building site for I.M. Pei’s twin skyscrapers, Society Hill Towers. Luckily, the rest of the neighbourhood has been restored to form one of the city’s most picturesque districts: cobbled gas-lit streets are lined with immaculately kept colonial, Federal and Georgian homes, often featuring the state’s namesake keystones on their window frames.