In November, the United Nations Educational, Scientific and Cultural Organization (UNESCO) celebrates the 40th anniversary of the World Heritage Convention, an international treaty ratified by 190 nations that set out to preserve important cultural and natural sites. The convention laid the foundation for the globally recognized UNESCO World Heritage List, defining the criteria for which sites should be included. The convention also offered nations guidance in identifying sites and preserving them.
The first World Heritage List debuted six years after the convention in 1978. Since then, 962 sites have been added to the list, including some of the world's most visited destinations, including Peru's Machu Picchu, Arizona's Grand Canyon and Australia's Great Barrier Reef. Take our trivia quiz and learn more about this collection of amazing destinations.
[For the record, 10:10 a.m. Oct. 17: An earlier version of this post said that Kilimanjaro National Park is in Kenya. The park is in Tanzania.]