I just discovered a genius way of displaying all posts on a Google Map using Map My Posts. The widget works with WordPress and can be downloaded from this page. It is really easy to install and simple for people to use. It simply groups your posts by country and add them to a clickable map like the one below:
[mmp-map]
I am also using a similar Wordpress widget called Map Route, which will be able to show you where I am going next:
[route height=”500″ width=”900″]