After World War I, the idea arose for the first time to create a movement in the world that would protect cultural and natural assets. However, this idea became really important in the 1950s, when the Egyptians wanted to build a reservoir at Aswan, endangering the monuments and archaeological monuments of Egyptian-Nubian culture. As a result, an international campaign was launched in 1959 at the initiative of UNESCO to save cultural heritage with the participation of 50 states, proving that international cooperation can preserve the world’s cultural assets of outstanding value to the whole world and to humanity. Subsequently, UNESCO and ICOMOS (International Council on Monuments and Historical Collections) drew up a convention for the protection of cultural heritage, which was extended to natural heritage at the 1965 Washington World Heritage Trust Conference. This is when the concept of world heritage was born. In 1968, the IUCN (International Union for Conservation of Nature) also formulated its proposals for the protection of natural values. The UNESCO World Heritage Convention, established on 16 November 1972, was thus established to preserve the world’s cultural and natural values, thus providing legal instruments over states, overriding the sovereign intervention of states to allow for global responsibility. In 1978, following the ratification of the Convention, the first sites were added to the World Heritage List. By June 2010, 187 states had acceded to the convention, making it one of the largest and most successful organizations in the world.