Camille Paglia once offered some great advice regarding Philadelphia architecture. Simply put: "Look up!" With our narrow streets and towering office buildings set against three story row houses, sometimes it's hard not to have your eyes navigate toward the sky, even if you happen to walk the same streets everyday. I would love to see the tourism industry capitalize on this concept. Put up some banners spouting this message around significant pieces of architecture. Or to be even more uniquely Philadelphian - like those little mosaics set into wet cement by some hipster last millennium referencing the year 2000 that are all over Center City - embed the sidewalk with a real message telling pedestrians to take a look at what's above them.