The United States boasts a total of 25 UNESCO World Heritage Sites, comprising eleven cultural, twelve natural, and one mixed site that spans its diverse landscapes. These sites, many of which are national parks, hold significant historical and cultural importance, shedding light on the rich tapestry of American society. In 1978, Mesa Verde National Park and Yellowstone National Park became the first U.S. locations to earn UNESCO World Heritage status. Since then, an additional 23 sites in 24 states, including two trans-boundary sites shared with Canada, have received this prestigious designation. Many travelers to the United States may not realize that they have visited UNESCO World Heritage Sites. Your memorable trips to places like Independence Hall in Philadelphia or the Statue of Liberty in New York were, in fact, visits to these esteemed sites. Below, we highlight all of these remarkable sites, with the full list available later in this article.