11/21/2013 04:02 pm ET Updated Jan 25, 2014

Incredible UNESCO Sites You May Never See Again

Of the 981 properties included on UNESCO's World Heritage List, some 44 are categorized as in-danger, for reasons ranging from political instability to irresponsible tourism.

By Linna Trubowitz, Condé Nast Traveler

UNESCO endangered

More from Condé Nast Traveler:

  • The Must-Have Gadgets for Every Traveler

  • The Friendliest and Unfriendliest Cities in the World

  • 12 Travel Mistakes You're Definitely Making

  • How to Fit Everything Into One Carry-On Bag