The UK company New Business Horizons has created what looks like the most comprehensive map of real world places re-created in Second Life I've ever seen. They have both a web-based graphic that you can click on to get teleport links to the sites in-world, as well as an in-world map with the same information.
You can find a lot of well known places like virtual Dublin, Morocco, Cuba and Amsterdam. Plus, there are lots of surprising entries in here including Nigeria, Mauritius, the Dominican Republic, and Belarus!
I did noticed one glaring omission: the Philippines! Otherwise, this is super impressive.