For reasons unknown to me, the Borough of Sussex, in Sussex County, New
Jersey, is octagonally shaped. As with many other NJ boroughs, towns, etc., it is
completely surrounded by another municpality. Perhaps the powers what be
wanted to make a circular borough, but found it easier to survey the eight
straight segments of the octagon, rather than risk duplicating the boundary mess in
northern Delaware?
Have a look:
http://tinyurl.com/5r68d
Mike Schwartz