23 breathtaking UNESCO World Heritage destinations in the U.S. and why you should visit them

Most likely, you have been to a UNESCO World Heritage site in the United States without knowing it. Remember that Griswoldian summer vacation to the Grand Canyon? The high school field trip to Independence Hall in Philadelphia? The college tour of the University of Virginia? Congratulations! That’s three in your pocket. But don’t stop now. You can collect all 23,...

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