• Baja peninsula (I have been to Tijuana, but that doesn't count)
• Costa Rica
• any number of other places, under the right circumstances...
Places I've been before and would like to visit again:
• Las Vegas
• Australia (esp. Queensland and Western Australia)
Canadian provinces I've visited: British Columbia, Alberta, Saskatchewan, Ontario, Quebec.
American states I've visited: Montana, Idaho, California, Texas, Arizona, Colorado, Nevada, Hawaii, Florida.
Other countries I've visited: Mexico, Australia, Scotland, England.
When I say "visited", I mean I've stayed there at least a few nights. Not a terribly impressive list; I may have forgotten a few. About half these places I went with my parents as a kid, or was sent on work assignments or courses.