Faced with the combined forces of population growth, economic prosperity, and urban expansion, cities are witnessing a significant rise in the movement of people and goods—mirroring the evolution of diverse mobility systems within urban environments. As technologies advance and modes of transport evolve, the adaptive reuse of train carriages, airplane cabins, and other service infrastructures reveals opportunities to explore their creative potential. Materials, technologies, and design tools converge around a shared goal: refurbishing and repurposing disused structures to give them new life.
As the late urban planner Jaime Lerner once argued, the future of architecture lies not in building new cities but in updating those that already exist. In a world where resources are finite and urban space is increasingly saturated, his statement feels more urgent than ever. It calls for architects to look inward, to rethink what truly needs to be built, and to recognize the creative potential of what is already there. Within the constraints of existing structures lies an opportunity to design differently: to repair, adapt, and reuse. Or, as French poet Louis Aragon would have it, to reinvent the past to see the beauty of the future.
This month, ArchDaily exploresBuilding Less: Rethink, Reuse, Renovate, Repurpose, a theme that examines the growing shift in architecture toward working with what already exists. As urban spaces grow denser and land becomes scarce, architects are rethinking the impulse to build anew. Instead, they are extending the life of existing structures, embracing retrofit and adaptive reuse as strategies for sustainability and creativity. The question guiding this exploration is simple, yet urgent: How can architecture redefine urban futures by building less?
Between September 25 and October 5, 2025, the XXIII Chilean Architecture and Urbanism Biennial took place in Santiago. Under the title "DOUBLE EXPOSURE: (re)program · (re)adapt · (re)construct," the event was organized around the idea of "understanding architecture not as the production of the new, but as the ability to reactivate what already exists." Based on this premise, the curatorial team, composed of Ángela Carvajal and Sebastián López (Anagramma Arquitectes) together with Óscar Aceves, conceived a circuit of eight venues located in downtown Santiago. Their goal was to revive and reclaim urban spaces through a series of free public activities that drew around 70,000 visitors. Among the reactivated sites, the ruins of the San Francisco de Borja Church stood out. Burned during the social outburst of October 2019, the site hosted a temporary pavilion that served as a venue for talks, readings, art installations, discussions, and community events.
Today, on the first Monday of October, we celebrate World Architecture Day. This year, the International Union of Architects (UIA) has set the theme "Design for Strength," a powerful call to action that resonates deeply with the UN's focus on urban crisis response. In a world facing unprecedented environmental and social disruptions, this theme challenges us to move beyond temporary fixes. It asks: How can our buildings and cities not only withstand shocks but also foster equity, continuity, and resilience?
While the concept of strength in architecture can easily evoke images of reinforced concrete and steel, a more profound interpretation is emerging, one that defines strength not as mere rigidity, but as a holistic capacity to endure and adapt. This includes many facets, from ecological resilience and stewardship to long-lasting concepts of social resilience or the long-lasting conservation of existing urban structures, all contributing to a built environment more able to respond to the multitude of crises faced by cities worldwide.
SPPARC architecture and design studio has revealed plans to renovate the former Ravenscourt Park Hospital in Hammersmith, London, which has stood vacant for two decades. The building, originally named the Royal Masonic Hospital and designed by Thomas S. Tait, is regarded as one of the first major modern buildings in the UK and was Europe's largest independent acute hospital when it was opened by King George V in 1933. Built to provide low-cost treatment for Freemasons and their families, the 260-bed facility operated until 1994, reopened as an NHS hospital in 2002, and was permanently closed in 2004. According to the recent announcement, the Grade II listed landmark, currently on Historic England's Heritage at Risk register, is intended to be repurposed as 140 new homes, a 65-bed care home, and spaces available for public hire.
HouseEurope!, a registered non-profit organization focused on promoting the social and ecological transformation of Europe's built environment, has received the 2025 OBEL Award. Presented annually by the Henrik Frode Obel Foundation, the award recognizes architectural contributions with the potential to drive meaningful change. Aligned with this year's theme, "Ready Made," the OBEL Award Jury selected HouseEurope! for its efforts in raising awareness and fostering public engagement around the need for a shift in construction and housing practices across Europe.
Inside Out, Downside Up Pavilion / Slaatto Morsbøl. Image Courtesy of Copenhagen Architecture Forum Copenhagen Architecture Forum (CAFx)
The first edition of the Copenhagen Architecture Biennial will take place from 18 September to 19 October 2025. Organized by CAFx (Copenhagen Architecture Forum), the event marks a transition from the previous annual Copenhagen Architecture Festival to a more expansive platform for architectural exploration. The theme of the inaugural edition, "Slow Down," invites participants to reflect on how the rapid pace of modern life affects the built environment. According to the organizers, this thematic shift encourages the envisioning of spaces that promote sustainability, longevity, and mindful engagement with our surroundings. In line with this vision, the organization launched an open call earlier this year for pavilion proposals that embody principles of circular design while serving as hubs for public programming during the event. Two winning proposals, modular structures by Slaatto Morsbøl and Tom Svilans x THISS Studio, were selected, each offering an approach to architectural deceleration.
At the end of each edition of the Architecture Biennale, far from the public eye, tons of exhibition materials are transported across Venice in handcarts and boats. Only a small portion of these materials is reused. The main obstacles are the limited storage space in Venice and the high logistical costs—recurring challenges for circular architecture. As a result, most of the waste ends up in landfills or nearby recycling centers. But this scenario is beginning to change. In response to growing environmental concerns, architects are developing strategies to make reuse more viable. These efforts go beyond architectural and construction decisions—they also involve logistics and international trade.
Scaenae view render. Image Courtesy of David Chipperfield Architects
The preliminary design for the architectural restoration and functional redevelopment of the Roman Theatre was presented on Tuesday, April 8, 2025, at the Auditorium of the Santa Giulia Museum in Brescia. The project was developed by the Milan office of David Chipperfield Architects, commissioned by the Fondazione Brescia Musei in collaboration with the Municipality of Brescia and the Brescia Chamber of Commerce, Industry, Handicraft, and Agriculture. Chipperfield was tasked with identifying the essential architectural elements to guide future design phases, leading to the drafting of the Technical-Economic Feasibility Project (PFTE) and the final project, including the necessary authorizations. This initiative is financially supported by the Italian Chamber of Commerce under a 2019 ministerial decree prioritizing cultural heritage, especially where it enhances tourism.
Fenix is a new museum in Rotterdam's City Harbour, dedicated to the collection of historic and contemporary objects that explore migration through art. It is located on the Katendrecht peninsula on the south bank of the River Maas, in a 100-year-old former warehouse recently renovated by MAD Architects and Bureau Polderman. This marks MAD Architects' first commission for a public cultural building in Europe. Recently completed, the building is set to open this Friday, May 16, showcasing three exhibitions: All Directions, featuring over 150 artworks and objects from the Fenix collections; The Family of Migrants, a photographic exhibition by Edward Steichen; and The Suitcase Labyrinth, an interactive installation made up of 2,000 donated suitcases.
The twentieth century marked a definitive shift in the realm of architecture, as the Modernist movement broke from traditional building styles and encouraged experimentation and innovation. With the help of new materials and technologies, these times represent a crucial moment in the history of architecture as both cities and building styles evolved at an unprecedented rate. The structures that stand testament to this day are, however, nearing the age of a hundred years old. Their stark design features are not always embraced by the public, while the functionalist principles often hinder the adaptability of their interior spaces. Given that they also often occupy central positions within the city, there is increasing pressure to demolish these structures and redevelop the area in its entirety.
In a context where sustainability and material identity are becoming priorities in architecture, some ancient materials are finding new life. Terrazzo, with origins dating back to the 15th century, stands out as an example of how tradition can fuel innovation. The modern form, as we know it today, emerged in 15th-century Venice, Italy, when Venetian mosaic workers, seeking to make use of marble scraps, began incorporating these irregular fragments into mortar to create durable and visually appealing surfaces for terraces around their homes. This approach not only minimized raw material waste but also led to the development of new surface-finishing techniques, evolving from manual stone rubbing to the use of a heavy, long-handled grinding stone known as a galera.
Why demolish when you can embellish? A collaboration between ArchDaily and ICEX highlights the most outstanding remodeling, reuse, extension and renovation works recently built in Spain. This competition focuses on how Spanish architecture values the revitalization of historic buildings and centers, and recovers existing structures promoting a more balanced urban development. In Spain, old casonas become boutique gems, and factories like Madrid's Matadero morph into cultural havens—a clever mix of tradition and modern flair. After all, good design isn't built—it's built upon.
In Belo Horizonte’s Aglomerado da Serra, Brazil’s third-largest favela complex with 50,000 residents, the Lá da Favelinha Cultural Center stands out as a vibrant hub of art and education. Founded in 2015 by the multifaceted artist Kdu do Anjos, the striking red building that stands out in the outskirts has gained recognition in both national and international architectural circles, earning several prestigious awards Yet, the recent renovation by Coletivo LEVANTE—honored as one of the Best New Architectural Practices of 2024—represents far more than vivid colors and bold design. It symbolizes the creativity and potential of the community itself. As a space for support and inspiration, Lá da Favelinha reflects a collective, democratic vision that merges the community’s dreams with the dedication of its founders.
Danish architecture firm Cobe has announced a new project to transform the historic 'Krulli' steelworks, a large-scale former industrial site in Estonia's capital, into a mixed-use city district. The strategy for the project is developed to optimize for material reuse, as materials, components and even entire buildings have been evaluated for their potential to be reintegrated into the scheme. This way, the decommissioned industrial area provides the foundation for an innovation hub, maintaining its history while adapting to the necessities of modern workspaces and city life.
The first Olympic village was built for the 1924 Summer Games in Paris. Before this, athletes stayed in hotels, hostels, schools, headquarters, and even on the ships that brought them to the host cities. Pierre de Coubertin, co-founder of the International Olympic Committee (IOC), proposed the idea of an Olympic village. He realized it would be more cost-effective to house athletes in temporary structures rather than hotels. He believed the village would also create a sense of community among the international competitors.
RUÍNA Arquitetura aims for greater socio-environmental awareness and the appreciation of materials while advocating for reuse as an alternative within the construction industry. In their practice, they explore new avenues for reclaimed materials, diminishing demolition waste and supplying construction materials with a reduced environmental footprint. In 2024, they were selected as part of ArchDaily’s 2024 Best New Practice for their unique attention to context, aiming to minimize its impact on the built environment through the effective reuse of materials and construction waste. Their participation in the 2023 Sharjah Architecture Triennale exemplifies how local ideas can achieve global recognition.
