40 Waukegan Harbor (Little Fort) (IL 1)
August 2, 2003 
latitude 42º 21' 38.4" N
longitude 87º 48' 48.2" W

This might have been more interesting when the original lantern room was present, but I suspect not.  As you can see, it now has an automated light on top of the original base.  Its at the end of a pier that's about 30 miles long (well, ... maybe only about ½ mile) directly out from the Waukegan Yacht club.