Foster + Partners
Is it possible to build cities that are resilient to earthquakes and flooding? Architecture firm Foster + Partners hopes to do just that with its climate-first masterplan for the city of Antakya, in southeastern Turkey, as pictured here in an artist's rendering.
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The capital of Hatay Province, Antakya (pictured in 2022) has a rich history. Situated at the foot of Mount Habib Neccar, it is partially built on the ancient city of Antioch, founded in the fourth century BC by Seleucid emperor Seleucus I Nicator.
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Yet it is also a city with a history of earthquakes, with two of the most devastating yet — 7.8 and 7.5 in magnitude — rocking the region in quick succession on February 6, 2023.
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The quakes reduced entire blocks of the city to rubble, killing tens of thousands of people and displacing many more into emergency camps and surrounding areas.
Foster + Partners
Six months after the earthquake, Foster + Partners were commissioned to draw up a masterplan for the revitalization of the city. Revealed in July 2024, the vision features artist’s renderings of a new-look Antakya.
Foster + Partners
Flood resilience is central to the plan. The Asi River runs through the middle of the city and has formerly posed a large flooding risk due to its proximity to a swathe of buildings. Under the new vision, illustrated in this rendering, the river would be bordered by a range of parks, pocket gardens and other open spaces that would act as natural "green buffers" by absorbing water when the banks burst.
Foster + Partners
The plan also includes a network of green spaces and local community parks, as shown in his rendering, that will boost biodiversity by providing habitats for flora and fauna. It will also benefit the wellbeing of residents and make access to nature more democratic, according to Foster + Partners.
Foster + Partners
Key features to minimize the destructive capacity of earthquakes include the absence of any cul de sacs, with an emphasis on "superblock" neighborhoods that improve circulation while providing central squares that can act as meeting hubs in the event of a natural disaster, as seen in this rendering.
Foster + Partners
While making the city more resilient it was also important for the plan to preserve the “spirit” of Antakya. “We feel an immense responsibility to deliver designs that recognise the rich cultural and historical legacy of this place, while also serving existing communities and future generations,” Furkan Demirci, chairman of Türkiye Design Council, who hired Foster + Partners, told CNN.

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CNN  — 

The earthquake itself could be measured in seconds, but for the people of Antakya, Turkey, the reverberations were scarcely quantifiable.

More than 50,000 people died and millions more were displaced when two earthquakes of magnitude 7.8 and 7.5 rocked the country’s southern region and northern Syria on February 6 last year. The United Nations put the rebuild cost for the region at more than $100 billion.

The city of Antakya (historically known as Antioch), capital of Hatay Province, was one of the worst hit in Turkey, with almost 80% of buildings reportedly damaged beyond repair.

It was devastation “beyond imagination,” according to Nicola Scaranaro of Foster + Partners, the architectural firm that last month published its masterplan to not only rebuild and revitalize the city, but to “future proof” it against earthquakes, flooding and other natural disasters.

It’s an aim easier said than achieved in an area historically prone to earthquakes, with last year’s the seventh to have destroyed Antakya since its founding in fourth century BC, Scaranaro said.

The city is nestled at the foot of Mount Habib Neccar in the valley of the Asi River, and its proximity to the river means the destructive impact of earthquakes is exacerbated by a phenomenon dubbed soil liquefaction, which sees soil lose its stiffness and act more like a liquid.

With swathes of buildings along the banks of the Asi, flooding has also long posed a danger to Antakya residents. Over 45,000 residents across 2.5 million square meters were at risk of being affected by floods even before last year’s earthquake, Foster + Partners estimated, with the likelihood of incidents only set to rise amid the climate crisis.

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Much of Antakya was left in ruins following the earthquakes.

Resilience

Ensuring resilience to both recurring threats was at the heart of considerations when, six months after the earthquake, the firm was commissioned by Türkiye Design Council — a non-governmental organization — to lead an international consortium of teams in developing a strategy to rebuild the region.

Architecture and street design will act as the first line of defense against earthquake impact, including compact buildings that should cope better with seismic activity than the large and long L-shaped structures that dotted Antakya previously.

Neighborhood “superblocks”, inspired by those in Barcelona, would promote car-free zones that ensure multiple routes in the wake of a disaster; both for emergency services and for residents escaping.

This set up also benefits quality of life, Scaranaro explains, leading to lower traffic — a big shift for a city previously dominated by cars — and a greater number of green urban spaces.

Green spaces can play an integral part in safeguarding against flooding, he added, with significant land along the river marked out to not be rebuilt on. Instead, continuous river frontage and parks will fill these high-risk areas, acting as a natural “buffer zone” when the banks burst and absorbing flood water.

Türkiye Design Council
An artist's rendering of a revitalized Antakya, with the river at its heart.

Planted with native species, the network of green spaces and local community parks will provide vital habitats for flora and fauna and act as “green corridors,” enabling wildlife to move freely. The approach will also help to meet the masterplan’s aim of doubling the amount of dedicated green space per capita.

“We felt that (previously) the access to green spaces was not very democratic,” Scaranaro said.

“If we actually use what is there, respect nature, and create this beautiful corridor of biodiversity, we give the city some nice pedestrian routes, cycling routes, and green spaces.”

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As climate change brings more extreme weather events, cities need to be prepared to combat floods. Global built environment consultancy Arup published a "Global Sponge Cities Snapshot" report in 2022 that surveyed seven cities on their natural ability to manage heavy rainfall. A "sponginess" ranking from 1% to 100% was calculated based on the quantity of green spaces, the quality of soils and the water run-off potential. Auckland, New Zealand (pictured) came top in the rankings.
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Auckland scored 35% on its overall "sponginess." Home to 1.4 million people, the city has many large gardens and parks including Mount Eden, the site of a dormant volcano. The city's stormwater management initiatives include systems to collect and slow the release of rainwater, defending the city from heavy rainfall and storm events.
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Nairobi, the Kenyan capital, also known as "the Green City in the Sun," is 34% spongy and ranked second out of the seven cities. Nairobi National Park (pictured) and other large grasslands can be found next to the city's built-up areas. According to Thomas Sagris, Arup's global water research lead, grasslands are better at absorbing rainwater than trees because they soak up water immediately.
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In contrast, the slums of Nairobi such as Kibera (pictured) are densely populated, with little to no greenery. These areas are particularly vulnerable to floods which affect the livelihoods and safety of the residents. In May 2021, severe floods caused by heavy rainfall led to casualties and many people living near the Mutuine River were displaced.
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In joint third place alongside Mumbai and Singapore, New York City scored 30% for its "sponginess" because it has absorbent soils that minimize water runoff. According to the report, there are plenty of parks and green areas in the Bronx, located to the north of the city. However, aside from Central Park (pictured), the south of the city has a lower distribution of trees and greenery with a higher volume of urban developments.
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As well as increasing the ability of cities to manage rainfall, green infrastructure can bring additional benefits to bolster resilience against the impact of climate change. Having large areas of tree coverage -- like in Mumbai, in India -- can shelter the city from the urban heat island effect, a phenomenon that occurs when heat is absorbed by pavements and buildings.
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To improve the overall "sponginess" of a city, the key is to integrate green infrastructure in existing building developments, according to the report. For over 50 years, Singapore has worked to incorporate trees and plants on roads and highways. Frequent rainstorms during wet months have also prompted the island to develop an efficient drainage system to lower the risk of floods.
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According to the report, climate change could displace millions of people from the coastal Chinese megacity of Shanghai (pictured). Home to more than 28 million people, many of whom live in high-rise buildings, Shanghai has a 28% "sponginess" score. It is part of China's sponge city initiative, launched in 2014, which aims to make 80% of the country's urban areas "spongier" with green infrastructure by 2030.
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London (pictured), which came last for overall "sponginess," at 22%, experienced severe floods in July 2021. Despite having a good spread of urban parks across the city, the lack of tree cover and less-absorbent clay-rich soil contributed to the low score. According to an IPCC report released last year, the risk of river flooding in Europe will also increase significantly as the climate warms.

Building trust

Construction commenced while the masterplan was being drawn up, with engineering consultancy firm Buro Happold forecasting that the full revitalization of the city will take 10 years.

However, the masterplan’s authors hope lessons can be learned long before the last brick is laid. The planning consortium wants to set a “new co-operative blueprint for the revitalization of disaster-struck cities” across the globe, a climate-first approach that Scaranaro believes has been sorely lacking.

“It should be at the forefront — it’s not always,” he said.

“Unfortunately, as we read the news there’s many similar natural disasters happening … How can we implement this level of resilience before something happens?

“It’s paramount that we look at it. We use the term sustainability, but sometimes we need to give a meaning to it.”

Yet despite its worldwide scope, the plan was primarily written for, and partly by, the people of Antakya, Scaranaro insisted.

Amid all the talk of revitalization and new features, preserving the “spirit” of the city was a cornerstone objective. Older citizens in particular were invited to face-to-face interviews to relay their memories of, and hopes for, the city.

In one interview with an elderly resident living in one of the container compounds set up for displaced citizens in the immediate aftermath of the earthquake, Scaranaro was told: “I don’t trust these buildings anymore, because these buildings have betrayed me.”

For the Italian, it was a quote that underpinned his purpose in the city.

“This is not about buildings; it’s about building trust and a sense of belonging. We want people to feel like they built the place back,” Scaranaro said.