World's 15 least visited countries

It might be hard to believe in this globalised world but some countries - whether for reasons of isolation, war or just a lack of obvious things to do - have slid completely off the tourism map.
So, if you like the idea of boasting that you've been to places your friends haven't even heard of, we've hunted down the world's 15 least visited countries for you. Take a trip to any of these places, and it's a fair bet you won't see too many umbrella-wielding tour guides

15: Mauritania

14: Guinea-Bissau

13: Bhutan

12: Chad

11: American Samoa

10: Comoros

9: Solomon Islands

8: Central African Republic

7: Sao Tome and Principe

6: Turkmenistan

5: Moldova

4: Marshall Islands

3: Tajikistan

2: Kiribati

1:Tuvalu