Is World Heritage status enough to save endangered sites?

For 50 years, UNESCO’S venerable list has recognised places of “outstanding universal value” for protection. But it comes with challenges from development to overtourism.

By Robert Draper
Published 11 Nov 2022, 10:28 GMT
Known for its architecturally distinct buildings, Sana’a, Yemen, has been on UNESCO’s World Heritage list since ...
Known for its architecturally distinct buildings, Sana’a, Yemen, has been on UNESCO’s World Heritage list since 1986. But a civil war that began in 2014 has damaged landmarks throughout the historic city.
Photograph by Moises Saman, National Geographic

In December 2016, the city government of Vienna, Austria, announced what sounded like welcome news at the time: A public-private partnership had formed to build a new ice-skating rink just outside the city’s century-old Wiener Konzerthaus.

For those who have visited the luminous birthplace of Beethoven, Mozart, and Freud, two characteristics quickly become evident. First, the core of Vienna is an architectural dreamscape of baroque palaces, immaculate courtyards, and a neo-Gothic city hall. Second, Austrians love winter sports, which has manifested itself in a ritual that takes place in the heart of Vienna at the beginning of every year since 1996: the construction of a seasonal ice-skating rink, or Eistraum (“Ice Dream”)which draws hundreds of thousands of visitors.

The neo-Gothic town hall serves as the architectural focus at the heart of Vienna. The Austrian capital’s historic city center was inscribed on UNESCO’s World Heritage list in 2001.
Photograph by Robert Harding Picture Library, Nat Geo Image Collection
Since 1996, "Eistraum," or Ice Dream, ice-skating rink (pictured here) has drawn winter sports fans every year to Vienna’s historic city center. Now, a proposed high-rise complex housing a permanent rink is drawing fire from the World Heritage Committee, which says it would erode the center’s “outstanding universal value.”
Photograph by Gerhard Trumler, Imagno, Getty Images

In other words, ice-skating is as Viennese as sausages and symphonies. So the idea of a permanent rink, housed inside a high-rise complex to minimise obstruction to pedestrians, would not have been expected to invite controversy. But one important stakeholder strenuously objected: the UNESCO World Heritage Committee, which decreed that the new complex would undermine central Vienna’s “outstanding universal value.”

Vienna’s historic city centre has been a UNESCO World Heritage site since 2001, one of the organisation’s 1,154 unique landmarks around the globe deemed worthy of protection. Since announcing its objection to the high-rise rink in 2017, the World Heritage committee has kept Vienna on its “in danger” list—joining 50 other embattled sites, from the ancient villages of northern Syria to Everglades National Park in Florida. If the city fails to satisfactorily address the committee’s concerns, it risks being permanently “de-listed” as a UNESCO landmark. This was the fate that befell Liverpool in 2021, which became the third site to lose its World Heritage status after years on the danger list due to high-rise development along its waterfront.  

Photograph by Gerhard Trumler, Imagno, Getty Images

In the case of Austria, the controversy involving a revered city and its beloved pastime has brought unwanted attention to the World Heritage program—which celebrates its 50th anniversary on November 16, 2022. Its governing body, the United Nations Educational, Scientific and Cultural Organisation, was formed in 1945 as part of a postwar global effort to promote cultural understanding and, with that, peace. Twenty-seven years later, participating countries ratified UNESCO’s World Heritage Convention in an effort to protect historically important sites from military conflicts, natural disasters, looting, and economic pressures.

Protecting an anything-but-static urban area like Vienna’s historic city centre is an inherently fraught proposition. It’s one of several challenges that UNESCO’s program has struggled to overcome since its inception in 1972. Foremost among these involves its central charter: to promote cultural awareness by drawing attention to emblematic monuments, landscapes, and habitats around the world.

Challenges to protecting World Heritage sites

The World Heritage designation has unquestionably succeeded in attracting visitors to isolated, often economically disadvantaged places. Its track record has been mixed, however, when it comes to preventing the flow of tourists from becoming a deluge. For example, the once somnolent village of Hoi An, on Vietnam’s central coast, now faces a crush of visitors that its narrow streets cannot accommodate.

Some locales have succeeded in managing overtourism on their own, like Dubrovnik, Croatia, which, under pressure from UNESCO, capped the number of visitors in its historic centre.

Then there are Cambodia’s 12th-century temples at Angkor Wat, at one time accessible only to priests. The temples were attracting 22,000 annual visitors when they were inscribed as a World Heritage site in 1992. Today, that number is five million and is expected to double by 2025.

UNESCO has preferred to frame its work at Angkor as “a model for the management of a huge site that attracts millions of visitors and sustains a large local population.” But as the organisation has also conceded, mass tourism has threatened the region’s water table, which in turn has imperilled the stability of the temples themselves.

Insulating World Heritage sites from malevolent actors has long been beyond UNESCO’s capabilities. The deliberate targeting of a country’s cultural treasures as a show of military belligerence has been all too common—from Aleppo, Syria, to Sana’a, Yemen. Famously and tragically, it could not halt the Taliban’s destruction of the towering Bamiyan Buddhas in Afghanistan in 2001.

Ibrahim Al-Hadi, director of the National Museum in Sana’a, Yemen, gazes out a museum window on July 8, 2021, after it was damaged during the country’s civil war. The museum is located in the historic city center, a World Heritage site since 1986.
Photograph by Moises Saman, National Geographic
A boy stands in front of a pile of rubble backdropped by Sana’a on July 7, 2021. In inscribing the old city, UNESCO noted its distinctive architectural character, most notably expressed in multistory buildings decorated with geometric patterns.
Photograph by Moises Saman, National Geographic

Throughout its half-century history, the World Heritage program has de-listed only three sites. In each case—Oman’s desert ecosystem of the Arabian Oryx Sanctuary; Dresden, Germany’s Elbe Valley; and, last year, the historic centre and docklands of Liverpool—it was after governments persisted with development projects at the sites over the organisation’s repeated objections.

Still, UNESCO’s influence can extend only so far. In Laos, for example, the government has proceeded with plans to construct a dam on the Mekong River near the ancient capital of Louangphabang, despite UNESCO’s insistence that a heritage impact assessment takes place beforehand.

Climate change threatening World Heritage sites

Of late, UNESCO has had to confront a newer enemy: climate change. In 2007, it published a paper written by scientists who alerted the organisation to growing threats in 26 different World Heritage sites. These included glaciers and biodiversity hotspots, but also archaeological landmarks such as the sprawling pre-Hispanic earthen city at Chan Chan, Peru, due to intense precipitation brought by El Niño.

On this front as well, the organisation has limited tools at its disposal. An example is Australia’s legendary Great Barrier Reef, a World Heritage site since 1981. Last year, UNESCO threatened to place the vast coral ecosystem on the “in danger” list if the Australian government did not more adequately work to reduce its greenhouse gas emissions—the first time in its history that climate change factored into such a warning.

After intense lobbying from the Australians, the committee deferred its decision until late 2022. In March, UNESCO dispatched a monitoring team to the reef. Although the Australian government has reportedly pledged roughly £106 million to protect the reef, it remains to be seen whether Australia’s historical aversion to a responsible national climate policy will be reversed.

An ecologist prepares an underwater collection net for the coming coral spawn at Moore Reef in Australia’s Great Barrier Reef, a UNESCO World Heritage site since 1981.
Photograph by David Doubilet, Nat Geo Image Collection
This aerial photo shows the size of the Great Barrier Reef off the coast of Queensland. UNESCO is monitoring the health of the reef, a vast ecosystem that’s at risk from the damaging effects of greenhouse gases.
Photograph by Stephen L. Alvarez

UNESCO has tended to have considerably more leverage in less wealthy countries, like Belize, where the world’s second biggest reef had languished on the World Heritage Committee’s “in danger” list since 2009 until this past June, when the committee applauded Belize for its “visionary” efforts to better manage its coastline.

Perhaps the most famously at-risk World Heritage site is Venice, Italy. The lagoon city has been simultaneously beset by stupefying overtourism (25 million visitors in 2019) and increasingly severe flooding exacerbated by climate change. Yet UNESCO decided last year not to place Venice on its “danger” list—once again, an apparent victory for government lobbyists and a defeat for environmental groups, who argued that Italy’s new ban on large cruise ships did not go far enough to address the crisis.

Following UNESCO’s act of inaction, Venetian officials took matters into their own hands. Beginning in January, Venice will be the first city in the world to charge an entrance fee, in hopes that this will slow the daily avalanche of visitors. Will it work? If it does, UNESCO will have played a role—indistinct and inconclusive, but still important.

Flawed and at times powerless though it may be, the World Heritage program remains relevant, if only because of the principle it espouses.

That principle is as simple as it is inconvenient: the world’s diverse treasures require protection since they cannot protect themselves. So it matters to say, as UNESCO has, that an ice skating rink endangers Vienna’s historic centre. If, at such moments, the World Heritage Committee exists only as a focal point where conscience is summoned, then the next 50 years may find it more important than ever.

Robert Draper is a National Geographic contributing writer.


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