Source: Volcanism on the other side of the world from the Yellowstone Caldera | U.S. Geological Survey
Category: United States of America
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Ultimate Guide to U.S. UNESCO World Heritage Sites
This guide includes background info on when and why these 24 U.S. UNESCO sites were recognized, along with info on how to visit them.
Source: The 24 UNESCO World Heritage Sites in the U.S [2026]