A friend of ours published the list of U.S. states that she visited on her blog. We decided to make a joint world map of the countries that we have visisted so far.
Between the two us, we covered 11% of the worlds countries. Our joint map of US states looks similar:
This one adds up to 45% of the States.
Interested? Create your own map of states that you visted or countries that you went to.