I was just curious about a possible inscription for the PSFS building in Philadelphia. It's not particularly a style that I love, but I do recognize its importance. As many probably know, it was the first example of an International Style skyscraper constructed in the United States. However, recognizing that the Empire State Building and the Chicago School skyscrapers haven't been inscribed, I realize PSFS is unlikely. But it may be worthy. URL
Another site that I have not seen mentioned and something that would make up for the complete lack of "old towns" or "old quarters" in the U.S. is the French Quarter (with a possible Garden District extension). I really don't understand how this has not been inscribed. It represents a mixing of so many cultures and the creation of a new one. From Spanish, to French, to Creole, to American - there are few places like it and I believe if this was in the islands it would probably be listed. I know Bourbon Street is a little wild, but that's part of the culture. Furthermore, places like the Old Ursuline Convent, the U.S Mint, the Spanish Cabildo, St. Louis Cathedral, Jackson Square, are historic and architectural treasures. It amazes me when I go to New Orleans to be in a square named after an American war hero and president, surrounded by an architectural ensemble of Parisian style landscaping(gardens, benches, lampposts, fences, etc.) funded by a French creole Baroness who also built the matching Pontalba Buildings which help form architectural coherence in the 1840s on each side of the square URL
Furthermore, the north side has three 18th c. buildings - one being the extraordinary St. Louis Cathedral, built by the French an the Cabildo and Presbytere flanking the cathedral, built by the Spaniards. If anything Jackson Square seems to have a claim - but with Poverty Point just getting listed, does it have a chance? Is this just the U.S. policy? But I really think UNESCO should be able to request in an instance like the French Quarter.