From rural schools award-winning projects, Mariam Issoufou is turning traditional, climate-savvy architecture into a frontline defence against extreme heat.
In the blazing heart of Niger, where the air itself shimmers with heat, Mariam Issoufou builds places that breathe. Her walls of earth and clay whisper ancient stories stories of resilience, of community, of balance between humanity and nature. Like a musician who finds new rhythms in old songs, she revives forgotten traditions to compose architecture that is both timeless and revolutionary.
The Hikma community centre in Western Niger is an architectural riddle. Sleek and modern but forged from traditional clay bricks, the structure both stands out and blends into the austere, semi-arid landscape that encircles it.
Home to a stunning orange-hued mosque and library, the complex is more than a feast for the eyes. When the midday temperature hits 45C, it becomes a refuge for many of the 3,000 people who live in the surrounding village of Dandaji. Thanks to Hikmas heat-absorbing materials and clever design, which allows for natural ventilation, its buildings are up to 15C cooler than the outside air.
The centre is one of dozens of buildings Issoufou has designed during a decade-long career that has focused on helping communities many impoverished adapt to a changing climate, and extreme heat in particular. For this work, the United Nations Environment Programme (UNEP) named Issoufou a Champion of the Earth this year.
Issoufou knows well the power of architecture to make a difference in peoples lives. She was 6 years old when her family moved from Nigers capital, Niamey, to the ancient sun-baked city of Agadez on the edge of the Sahara Desert.
Were talking the kind of heat that makes you feel like you are bursting out of your own flesh, she says. I would come home from school and enter the mud vestibule of our house, and the temperature dropped so dramatically that I would shiver. This really drove home to me the importance of choices in the way we create our spaces.
Issoufou spent the first part of her working life as a software developer in New York before enrolling in an architecture programme in her mid-30s.After graduation, she returned to Niamey, a city largely shaped by colonial architecture ill-adapted to its current culture and environment. Keen to work with local engineers, masons and designers, she wanted to help communities across Africa contend with a fast-changing climate, bringing traditional craftmanship back into different parts of the building value chain to do so.
Globally, the buildings and construction sector is one of the main drivers of climate change. A recent UNEP report found that buildings both because of how theyre made and how theyre powered are responsible for nearly 35 per cent of planet-warming carbon dioxide emissions. As the global population grows, the key to turning architecture into a solution is by treating building not as mere construction but as an intersection where many challenges meet and can be solved together.
Issoufous first major project, Niamey 2000, illustrates how this can be done, tackling affordability, climate adaptation and the survival of Nigers traditions at once. A residential project, it responds to Niameys housing crisis not with concrete high-rises but compact clusters of linked homes that reflect the dense, intertwined fabrics of pre-colonial Sahelian cities. Made of compressed earth bricks, which Mariam calculated to be around 30 per cent cheaper than concrete and naturally cooler, its communal areas foster community and intergenerational living, while still maintaining privacy and calm. Because the residential sector accounts for more than 75 per cent of buildings globally, the project shows the huge potential of housing to drive sustainable construction; Niamey 2000 was shortlisted for an Aga Khan Award in Architecture in 2022.Her portfolio shows that theres no type of building that cannot be similarly approached with such architectural and cultural intelligence.
From mosques to museums, schools, markets, institutes and business, Issoufous projects always straddle practicality and poeticism, meeting modern needs with climate-smart application of tradition. A four-storey office building in Niamey, one of Issoufous ongoing projects, mixes compressed-earth bricks with screened windows in contemporary diagonal design that keeps temperatures and energy-use down; an elementary school in an agricultural village in Nigers southwest intersperses passively-cooled classrooms and community gathering spaces with farmland, food gardens and a rainwater reservoir. Alongside her architectural practice, Issoufou is a professor at the Swiss university ETH Zurich and has won multiple accolades, including being selected by the Rolex Mentor and Protg Arts Initiative as a protg to renowned architect David Adjaye in 2018, and winning the Architizer A+ Impact for Design Award in 2023.
She is hopeful architects around the world will rediscover traditional ways of building as the climate crisis deepens.
We focus on technology as the only solution and the only metric of innovation but the answers are already with us, she says. We built our entire existence based on climate and there is really no reason that we wouldnt be able to have that kind of approach in the future.
Trying to stay hopeful, Issoufou sees Africas climate challenges as an opportunity a call for its architects to draw from the continents deep well of traditions and lead the world by example. She believes the best practices for building in warmer climates could originate from Africa itself.
As global concern for resilience and climate adaptation grows, she says, this is a unique moment for African architects to be at the centre of the conversation.
