Cultural heritage consists of monuments (such as architectural works, monumental sculptures, or inscriptions), groups of buildings, and sites (including archaeological sites). Independence Hall in Philadelphia, Pennsylvania is an example of cultural heritage. Before today's survey, were you aware of cultural World Heritage Sites in the United States?

Natural features (consisting of physical and biological formations), geological and physiographical formations (including habitats of threatened species of animals and plants), and natural sites which are important from the point of view of science, conservation, or natural beauty, are defined as natural heritage. Yellowstone National Park is an example of a natural World Heritage Site. Before this survey, were you aware that the United States has many natural World Heritage Sites?

There are 26 World Heritage Sites in the United States, with a further 17 on the tentative list. Would you be interested in a survey series showcasing World Heritage Sites in the United States?