Both
whichclothes and
slaymesoftly have done this map, and it looked interesting.
Thanks to two extensive road trips with my grandparents when I was young and many camping trips during the 30 years I was married, I've seen some wonderful things. [My ex may have his faults, but he did enable some great travel experiences for the kids and me.] I've also visited nearly all the provinces of Canada, but have never been to Mexico.
visited 43 states (86%)
To create your map (US or world-wide):
http://douweosinga.com/projects/visited