This week UNESCO announced its newest additions to the World Heritage List—a vaunted group that includes the Taj Mahal, the Pyramids of Giza, and Uluru (Ayers Rock) in Australia. Close to 800 sites are cultural, and sadly, 46 of the 1,007 (a recently updated list) are in danger of disappearing. 

Here are a few natural and manmade wonders that we think should have made the cut.