The ancient city of Babylon, first referenced in a clay tablet from the 23rd century B.C., has been listed as a UNESCO World Heritage Site.
The vote, at a UNESCO World Heritage Committee meeting in Azerbaijan's capital Baku, made the ancient Mesopotamian city on the Euphrates River the sixth world heritage site within the borders of a country known as a cradle of civilization.
Iraqi President Barham Salih said the city, now an archaeological ruin, was returned to its "rightful place" in history after years of neglect by previous leaders.
Prime Minister Adel Abdul Mahdi also welcomed the news.
"Mesopotamia is truly the pillar of humanity's memory and the cradle of civilization in recorded history," he said.
The government said it would allocate funds to maintain and boost conservation efforts.
Babylon, about 85 kilometres south of Baghdad, was once the centre of a sprawling empire, renowned for its towers and mudbrick temples. Its hanging gardens were one of the seven ancient wonders of the world, commissioned by King Nebuchadnezzar II.
Visitors can stroll through the remnants of the brick and clay structures which stretch across 10 square kilometres, and see the famed Lion of Babylon statue, as well as large portions of the original Ishtar Gate.
As the sun began to set on the crumbling ruins, activists and residents flocked to the replica Ishtar gate at the site's entrance to celebrate what they called a historic moment.
"This is very important, because Babylon will now be a protected site," said Marina al-Khafaji, a local who was hopeful the designation would boost tourism and the local economy.
It would allow for further exploration and research, said Makki Mohammad Farhoud, 53, a tour guide at the site for more than 25 years, noting that only 18% of it had been excavated.
"Babylon is the blood that runs through my veins, I love it more than I love my children," he said.
Decades of neglect
Excavations of what was once the largest city in the world, began in the early 19th century by European archaeologists, who removed many artefacts.
In the 1970s, under President Saddam Hussein's restoration project, the southern palace's walls and arches were shoddily rebuilt on top of the existing ruins, causing widespread damage.
This was exacerbated during the U.S.-led invasion of Iraq in 2003, when U.S. and Polish troops stationed nearby built their military base on top of the Babylonian ruins.
Many inscriptions written by soldiers can still be seen on the ancient bricks.
The site is in dire need of conservation, Farhoud said.
Unlike three other World Heritage sites in Iraq, UNESCO did not designate Babylon as one in "in danger" after objections from the Iraqi delegation.
Iraq is replete with thousands of archaeological sites, many of which were heavily damaged or pillaged by Islamic State during its barbaric three-year-rule which ended in 2017.
The other five World Heritage Sites are the southern marshlands, Hatra, Samarra, Ashur and the citadel in Erbil, the capital of Iraq's Kurdistan Region.
Additions to UNESCO World Heritage List
The ancient ferrous metallurgy sites of Burkina Faso and a national park in Iceland are two of five new members added to UNESCO's World Heritage List on Friday afternoon.
The sites in Burkina Faso are the oldest evidence of iron production in the country and include fifteen natural-draught furnaces, the use of some dating back hundreds of years.
Iceland's Vatnajokull national park, established in 2008, covers 14 per cent of the country with volcanoes, glaciers and geothermal activity. There are ten active volcanoes in the park, two of which are the most active in Iceland.
The other new additions announced by the World Heritage Committee include the ancient city of Babylon in Iraq, Paratyand Ilha Grande as a culture and bio-diversity site in Brazil and French Austral lands and seas. More sites will be named over the weekend.