From the World Heritage inscription for Waterton-Glacier International Peace Park:
In 1932 Waterton Lakes National Park (Alberta, Canada) was combined with the Glacier National Park (Montana, United States) to form the world’s first International Peace Park. Situated on the border between the two countries and offering outstanding scenery, the park is exceptionally rich in plant and mammal species as well as prairie, forest, and alpine and glacial features.
Glacier might be my favorite national park in the US. The views are breathtaking and mountains are magnificent.
View the complete list of UNESCO World Heritage Sites in the United States.
View the complete list of UNESCO World Heritage Sites in Canada.
View the list of all of the UNESCO World Heritage sites I have visited on my travels.