There is the Ben Franklin Bridge between Philadelphia and Camden, which  probably expanded the market base of the Mr.Bar Stool.  There was a wonderful lighting system on this bridge designed by the Venturi architectural firm.  The lights were triggered in succession parallel with the trains that would cross, giving the illusion that the lights were moving across the bridge at night.  They now seem to just be on all the time, no movement at all- they may be broken.

This is the 'Olde City' section of Philadelphia.  Many of the historic buildings of the city are located within a 10 block radius.  The 1700's architecture of this area is very interesting, the spelling very odd.