World Heritage Sites contain constructions, remains, and town or natural sceneries with outstanding universal value. They are listed on the World Heritage Site List based on the World Heritage Convention, which was adopted by the UNESCO General Assembly in 1972.
More than 1,000 sites are designated worldwide.
Agency for Cultural Affairs / World Heritage https://www.bunka.go.jp/english/policy/cultural_properties/introduction/world_heritage/
Beginning
In the 1960s, the plan to build the Aswan High Dam was announced to control the floods of the Nile in Egypt. It was discovered that it would submerge the Nubian ruins of ancient Egyptian civilization underwater. Measures were taken to relocate the ruins, and this effort was successful. This success led to the establishment of UNESCO’s efforts to preserve historic remains, cultural sites, and natural environments, and to promote the value of cultural diversity worldwide.
Now
The number of areas hoping for World Heritage designation is on the increase because it can heighten their value as sightseeing spots. Meanwhile, UNESCO continues with strict examinations to prevent the number from increasing disorderly. It checks whether the environments and regulations are properly arranged to preserve the site and whether it is attractive and valuable enough to be designated. If a designated site is preserved in poor condition, the organization can cancel the designation.
Three Classifications
The First one is a group of Cultural Heritages, including the constructions with cultural diversity or historical significance. Taji Mahal in India, Cologne Cathedral in Germany
The Second one is a group of Natural Heritages, including the islands, mountains, and wetlands all of which maintain the unique ecosystem. Kilimanjaro National Park in Tanzania, Yellowstone National Park in the US
The Third one is a group that has both the features mentioned above. Meteora in Greece, Tikal National Park in Guatemala