The World Economic Forum has release their Travel and Tourism Competitiveness Report for 2008 (some time ago, admittedly I’m a bit late). The rankings don’t measure how attractive a country is as a tourist destination, but rather the development of the travel industry there. Most of the countries at the top were in western Europe along with the US and Canada.
Most at the bottom of the list were African nations. Like I’ve said before, a tourism industry is a great boost to a 3rd world economy, since it doesn’t require much infrastructure and a weak local currency can attract tourists. You can view the entire report here [pdf], if you do you’ll notice that none of these up and coming destinations are on the list.