These sites have all been on the List of World Heritage in Danger for more than a decade.
The List of World Heritage in Danger helps draw support for sites that are under threat from climate change, conflict, poaching, urban sprawl etc.
The World Heritage in Danger list is thus another way in which a World Heritage Site may be protected and preserved for future generations.
The World Heritage Committee also added four sites to the List of World Heritage in Danger, and removed the Galapagos Islands (Ecuador) from this List.
During the session, the World Heritage Committee will examine progress in the conservation of the 35 properties on the List of World Heritage in Danger.
It removed the Fort and Shalamar Gardens in Lahore (Pakistan) and the Rice Terraces of the Philippine Cordilleras (Philippines) from the List of World Heritage in Danger.
In this case, if the alert is justified and the problem is quite serious, the site will also be included on the List of World Heritage in Danger.
If the Outstanding Universal Value of a site is threatened by natural disaster, armed conflict or unchecked development, the site may be inscribed on the World Heritage in Danger list.
The Committee will also review the state of conservation of 147 World Heritage properties, including the 31 sites inscribed on the List of World Heritage in Danger and another 36 that are causing serious concern.
The 34th session of the World Heritage Committee meeting took place in Brasilia from 25 July - 2nd August 2010 to consider nominations for the World Heritage List and the List of World Heritage in Danger.
During the session, World Heritage Committee members will examine the state of conservation of 169 properties including the 34 sites inscribed on the List of World Heritage in Danger because of serious threats to their outstanding universal value.
The List of World Heritage in Danger is designed to inform the international community of threats to the outstanding universal values for which a property has been inscribed on the World Heritage List, and to encourage corrective action.
The Committee will also review the state of conservation of the 30 World Heritage properties inscribed on the List of World Heritage in Danger and may decide to add to that list new properties whose preservation requires special attention.
Two conservation success stories were recognized by the World Heritage Committee allowing for them to be removed from the List of World Heritage in Danger: Fort and Shalamar Gardens in Lahore (Pakistan) and the Rice Terraces of the Philippine Cordilleras (Philippines).
The government of Mali will request the inscription of the two World Heritage sites of Timbuktu and the Tomb of Askia on the List of World Heritage in Danger by the World Heritage Committee during its forthcoming session (24 June to 6 July).
They will also discuss sites on the World Heritage List in Danger, and a selection of those whose state of conservation is up for review.
Problems including urban encroachment had warranted the inscription of the site on the World Heritage List in Danger in 2000, at the request of the Pakistani government.
In an unusual, fast-track procedure, the Church of the Nativity in Bethlehem was accepted as a world-heritage site and declared to be in danger at the behest of the Palestinian authority which was, controversially, admitted to UNESCO as a full member last November.
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Liverpool is in danger of losing its World Heritage status if the scheme goes ahead, according to the United Nations heritage agency.
Just on Thursday, the World Heritage Committee had accepted the request of the Malian government to place Timbuktu on UNESCO's sites in danger.
In October 2011, the ruins were placed on the World Monuments Fund's Watch List, a catalogue of cultural heritage sites around the globe which are in danger.
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