Let's see... NYC, SF, Washington DC, Boston, Philidelphia... Heck even Dayton, Oh has entire areas and streets that are older than old town.
I'll add to that list Omaha NB, which has a spectacular area literally composed of street after street after street of fully restored, beautifully maintained houses from the American West era, roughly dating from the 1860-80's. Frankly I've never been_that impressed by our so-called Old Town; there are many cities with far larger, much more extensive and more historically significant "older" sections of their cities than ours. In a similar vein I am sometimes bemused by the enormous fuss made over the Legislative Buildings: granted it is a lovely structure but come on - there are 50 state and 10 provincial capitals on the continent, a majority of which have legislative structures at least as big, at least as old or in many instances especially in eastern North America, that are far older than ours...