The World Heritage List is a catalog maintained by the United Nations Educational, Scientific and Cultural Organization (UNESCO) that recognizes sites of outstanding cultural or natural importance to humanity. These sites can include historical landmarks, cities, and natural wonders, and they are selected based on criteria such as their significance, uniqueness, and integrity. Being included on the World Heritage List helps to promote awareness and conservation of these important sites. Countries that have sites on the list receive support and guidance from UNESCO to protect and preserve their cultural and natural heritage for future generations.