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Italian campaigners are giving it their best shot.
This is the culmination of efforts from France, Switzerland and Italy that began in 2009.
The secretive Middle Eastern country has launched a new tourist visa, opening its doors to European visitors.
A portion of the roof collapsed after catching fire, firefighters said on Twitter.
A hilly terrain in northeast Italy known for its Prosecco production has been added to the UNESCO World Heritage list among other cultural landscapes and cities in the world.
The Hyrcanian forests along the Caspian Sea in Iran and the migratory bird sanctuaries in the Gulf of China are among the new sites that made UNESCO's emblematic World Heritage List this year.