All of these doors are in Old New Castle, Delaware, just a short drive from Wilmington. William Penn first landed in (old) New Castle in 1682 on the banks of the Delaware River. The former county seat and center of Colonial government (before Penn established Philadelphia) still has fewer than 5,000 residents.
There's a home and garden tour every May. And there's a great little pub called Jessop's if you're ever in the neighborhood.