It is clear that despite management efforts at local, regional and national levels, a significant number of threats to the reef are getting worse.
Scientists used muon radiography to scan a 12 meter building hidden beneath the ground in the fortress of Naryn-Lala.
The ship, an MSC Opera owned by MSC Cruises, had been preparing to dock at a terminal in the Giudecca Canal, a major hub that leads to the popular Saint Mark's Square.
Until now, the Qianlong Garden, which includes elaborate rock gardens and more than two dozen pavilions and structures from the most extravagant dynasty in imperial China - has only been seen by royal eyes. That all changes in 2020.
The 19 wooden sculptures were found in a passageway in the citadel.
One is more than 1,000 years old.
UNESCO has identified 1092 sites worldwide for protection because of their cultural, historical or scientific value or other significance. Here are the ones in North America.
The country's Supreme Court scolded government agencies for failing to look after the World Heritage site.
The driver left deep prints in the Nazca Lines, a UNESCO World Heritage site.
North Korea, known for its reclusive, militant policies, is attacking President Donald Trump for isolating himself from the international community.
The capital, Asmara, is now a world heritage site. But will more people visit Africa's most secretive state?
The Valongo Wharf was described as "the most important physical trace of the arrival of African slaves on the American continent."
Okinoshima Island is home to sacred shrines of the Shinto religion, Japan's largest faith.
Greenpeace said listing the World Heritage Site as endangered would have forced the Australian government to act on climate change.
UNESCO must demonstrate the highest level of tolerance for all peoples, religions, nations and cultures, writes Moshe Kantor.
An exhibition of 150 submissions is now up in the Iranian capital, as Germany, Israel, UNESCO and others condemn the contest.
Iraqi officials hope that a new museum in Saddam Hussein's former palace will revive of the ancient port city of Basra.
The cartoon contest, planned for June, will "incite hatred, racism, and discrimination," says UNESCO chief.
The Islamic State militant group demolished artefacts for "idolatry" in Palmyra in 2015.
Ministers and UN officials demand action to preserve the Middle East's cultural relics.