This is my not-so-impressive map of where I've been (as of July 2015). It's obviously US and North American-centric as I have very little international travel :( . For clarification, the lighter red states indicate just driving through and/or just using an airport, as opposed to the rest of the colored in regions which indicate a minimum of actually stopping overnight there
Perhaps I should use a different map, one that splits up all countries into their primary administrative divisions (like the US and Canada and Australia have here) just for consistency's sake.