Here is a photograph showing an overall view of the historical neighborhood of Sana'a, the capital of Yemen.
The Bekaa Valley in the city of Baalbek, Lebanon.
Vienna, the capital of Austria, is also under threat in its historical center.
The Tasubi Tombs in Uganda have also been added to the list after a fire incident.
The Great Barrier Reef, known as the world's largest coral reef system located in Australia, is waiting to be considered for inclusion in the endangered list. Despite warnings of its endangerment due to global warming, no decision has been announced yet.
Libya.
