This article is part of our new Opinion section, a format for argument-driven essays on critical questions shaping our field.

The modern sustainability project is built on the promise that evolving technologies can reconcile urban and economic growth with ecological responsibility. By the metrics developed by the built environment professions and the policies adopted by governments, progress is tangible and accelerating: buildings consume less energy per square foot than they did a generation ago, vehicles emit fewer pollutants per mile, and urban infrastructure is more integrated and measurably cleaner in many cities. And yet total resource consumption continues to rise. Sustainability, as currently practiced across the built environment professions, has become a strategy for optimizing consumption rather than reducing it. Until the profession is willing to question the scale and structure of demand rather than the efficiency with which that demand is met, its most celebrated achievements will continue to fall short of the problem they claim to address.

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Lacaton & Vassal have announced the transformation of a former administrative center into a mixed-use residential and office building in Vannes, a medieval town in Brittany, northwest France. The project is part of a State policy to mobilize state-owned land for housing. In 2023, the French State launched a call for expressions of interest for a project on the former administrative complex, which housed several State services, in consultation with the City of Vannes. The winning proposal is a partnership between GReeStone Immobilier and Grand Ouest Immobilier, with an architectural team formed by the office of Anne Lacaton and Jean-Philippe Vassal, winners of the 2021 Pritzker Prize, in partnership with Emmanuelle Delage Architecte. According to the city government, the proposal was chosen with the aim of promoting resilience and limiting the carbon footprint by renovating rather than demolishing.

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Architectural heritage is often described as what survives time. Yet survival does not explain why certain buildings are preserved while others disappear. Many works now protected as cultural heritage were once criticized, contested, or openly rejected; they were accused of being socially misguided, materially flawed, or symbolically excessive. Over time, however, these same shortcomings have become central to their meaning as heritage emerges as a slow and unstable process of interpretation.

Contemporary architecture operates under intense scrutiny, pressured by environmental responsibility, social equity, economic volatility, and accelerated technological change. Buildings are expected to perform ethically, efficiently, and symbolically, often simultaneously. As a result, architectural failure is no longer an exception but an increasingly common condition. Projects age faster, materials reveal limitations sooner, and urban strategies quickly fall out of sync with shifting political, social, and environmental realities.

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Beneath the visible surface of cities lies an invisible architecture. Subways, tunnels, water systems, data cables, and bunkers form a dense network that sustains urban life while remaining largely unseen. The ground beneath our feet is not a void but a complex territory that holds the infrastructures, memories, and anxieties of our age. In recent years, as land becomes scarce and climate pressures intensify, architects and urbanists have turned their gaze downward, rediscovering the subterranean as both a physical and conceptual frontier. To design underground is to engage with the unseen mechanisms that shape the world above.

The subterranean has long been a site where architecture intersects with politics, technology, and belief. From the catacombs of Rome to the industrial subways of modernity, descent has symbolized both protection and exposure. Twentieth-century urbanism transformed this gesture into a system: metros, shelters, and utilities redefined the city section as an instrument of governance. Beneath the promise of efficiency and progress, the underground absorbed the anxieties of an era of war, surveillance, and collapse. Its evolution reveals not only how societies build, but also how they fear.

Today, the ground has become the new frontier of urban expansion and ecological adaptation. As digital infrastructures, energy systems, and climatic buffers migrate below grade, architecture confronts a space both technical and metaphysical — essential yet marginal, invisible yet decisive. To think in sections rather than in plan is to recognise that contemporary cities no longer exist solely in their skylines but also in their depths. The challenge for architecture is not only to occupy that space, but to render it legible, to turn the unseen into knowledge, and the hidden into a new terrain of design.

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The potential of existing buildings to shape cities and communities in flux through reuse and adaptation is the key focus of HouseEurope! and their activism: addressing the pressing challenge across much of Europe, where it is often easier, cheaper, and faster to demolish buildings than to renovate. For decades, construction policies, industrial practices, and market systems have favored new development, often undervaluing the cultural, social, and environmental significance of existing structures. For their work advocating systemic change in architecture, HouseEurope! received the 2025 OBEL Award under the theme "Ready Made." In a conversation with ArchDaily, collective members of HouseEurope! Alina Kolar and Olaf Grawert discussed the organization's approach to architecture, policy, and collective action.

This article is part of our new Opinion section, a format for argument-driven essays on critical questions shaping our field.

Who designs architecture today? In a professional landscape increasingly defined by collaborative workflows, generative software, and distributed teams, the figure of the architect as a singular creative author feels both anachronistic and inadequate. This article argues that architectural authorship is no longer an individual act, but a collective and distributed condition shaped by institutions, technologies, and shared forms of labor. The transition from individual to collective authorship is not simply a consequence of larger offices or digital tools; it signals a deeper structural shift in how architecture is produced, communicated, and validated.

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Architecture has always played a key role in providing shelter and protection for human beings. In prehistoric times, we sought refuge in caves, taking advantage of rock structures for protection against the natural elements and predators. Over time, shelters began to be made from materials found in nature, such as branches, leaves, and animal skins, evolving into more permanent and complex homes, with walls made of stone, bricks or wood, roofs to protect against rain and sun, and doors to control access. As we developed more advanced building skills, we used materials such as wood, stone, and clay and architecture evolved significantly, with the construction of temples, palaces, and fortifications that provided not only shelter but also symbolized power, status, and cultural identity. Even so, our buildings can continue to be seen as shells that protect us from the outside world. 

From the massive stones of Greek temples to glazed skyscrapers, we work with a range of possibilities and thicknesses to separate what we consider internal and external. This article seeks to explore this diversity of thicknesses in architecture, from simple materials to complex construction techniques, highlighting how this variation not only provides protection but also influences our perception and interaction with the built environment.

In a world facing ecological exhaustion and spatial saturation, the act of building has come to represent both creation and consumption. For decades, architectural progress was measured by the new: new materials, new technologies, new monuments of ambition. Yet today, the discipline is increasingly shaped by another form of intelligence, one that values what already exists. Architects are learning that doing less can mean designing more, and this shift marks the emergence of what might be called an architecture of restraint: a practice defined by care, maintenance, and the deliberate choice not to build.

The principle recognizes that the most sustainable building is often the one that already stands, and that transformation can occur through preservation, repair, or even absence. Choosing not to build becomes a political and creative act, a response to the material limits of the planet and to the ethical limits of endless growth. That Architecture moves beyond the production of new forms to embrace continuity, extending the life of structures, materials, and memories that already inhabit the world.

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From projects, ideas, drawings, and sketches to photographs, models, material samples, and other documentation, these records embody years and memories of professional work responding to different needs, contexts, and purposes. Understanding that the architectural archive can serve as an effective method to inform and expand our understanding of collective intelligence, several foundations and architectural archives today take on multiple functions, extending their boundaries toward new horizons. Beyond preserving legacies and presenting them, they demonstrate the importance of promoting forward-looking cultural, social, and educational programs that engage younger generations in contemporary issues.

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In recent years, architecture has increasingly embraced adaptability, flexibility, and responsiveness as core design principles. This evolution reflects a shift from traditional notions of static, permanent structures to dynamic environments that can adjust to changing needs and conditions. Central to this transformation is the concept of "soft architecture", which leverages pliable materials and innovative systems to create spaces that are functional, sustainable, and user-centric. Soft architecture takes shape through membranes that breathe, façades that move, structures that inflate or fold, and surfaces that bend rather than break. It involves designing for transformation — not only in how a building performs environmentally, but also in how it can accommodate shifting functions, user interactions, or temporary occupations. This approach to building challenges traditional notions of durability and control, proposing instead a more responsive and open-ended architecture. It reflects a growing awareness that buildings, like the societies they serve, must be able to evolve.

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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.

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For nearly the past two decades, cities around the world embraced "starchitecture"—futuristic, eye-catching buildings designed by globally renowned architects. In China, this trend was particularly pronounced as rapid urbanization fueled the construction of iconic megastructures like Zaha Hadid's Galaxy SOHO, OMA's CCTV Headquarters, and Herzog & de Meuron's Bird's Nest Stadium in Beijing. At the time of their construction, these were all celebrated as symbols of progress and global ambition. However, architecture worldwide has begun shifting toward a more context-driven, human-centered approach, with China emerging as one of the key contributors to this transformation. This year, Liu Jia Kun's 2025 Pritzker Prize further underscores that shift.

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French architect Anne Lacaton, recipient of the 2021 Pritzker Architecture Prize,has been awarded the 2025 Jane Drew Prize for Architecture, an annual accolade recognizing an architect whose work and commitment to design excellence have contributed to raising the profile of women in architecture. Part of the W Awards, the prize honors figures who have advanced architectural practice through innovation, advocacy, and impact. Lacaton, co-founder of the Paris-based practice Lacaton & Vassal, was selected for her pioneering approach to sustainable and socially responsible architecture.

Kazuyo Sejima and Ryue Nishizawa, founders of the renowned architecture firm SANAA, have been announced as the recipients of the 2025 Le Prix Charlotte Perriand by the Créateurs Design Awards. Announced today in Paris, France, the award honors exceptional contributions to modern architecture and design. Sejima and Nishizawa, known for their minimalist designs that integrate form, function, and the environment, continue to be recognized as innovators in the field, having been previously recognized with the prestigious Pritzker Architecture Prize in 2010. Sejima and Nishizawa will accept Le Prix Charlotte Perriand at the Créateurs Design Awards ceremony in Paris on January 18, 2025.

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Social infrastructure encompasses the resources and services that allow the creation of communal bonds and social connections. Within the built environment, it manifests through public spaces like parks, libraries, and community centers alongside threshold spaces such as public transportation stops.

These public social spaces play a crucial role in strengthening communities and, in turn, their ability to respond to catastrophic climate-related events. They can provide physical shelter to the populations most vulnerable to these events and foster resilient networks of people who can more quickly recover. Given the escalating frequency of extreme weather events in the United States due to climate change and its social infrastructure inadequacies, examining public spaces as a critical tool for climate resilience becomes vital.

The facade of a building often serves as a reflection of both the urban fabric it is set in, as well as what lies behind it. Beyond aesthetics, facades hold important functional, cultural, and sustainable significance, especially in relation to the interior design. Although natural light, views, and spatial organization are influenced by the facade, architects have been prioritizing the relationship between the building's envelope and the quality of the interior, keeping in mind current cultural, economical, and environmental changes influencing the way people design their living space. So responding to these ever-changing needs and habits, along with the focus on overall wellbeing, architects offset the facade and ceiling - and in some particular cases, floors - to create interiors within interiors; secondary envelopes that protect the interior space from the outside environment.   

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Sir John Soane’s Museum has announced French architecture practice Lacaton & Vassal as the recipient of the 2023 Soane Medal. The award comes in recognition of the office’s work spanning over 3 decades. Through an honest design approach, the office became known for the resourceful repurposing of materials and existing structures to prioritize the needs of residents and local communities. For this approach, the office has been previously awarded as the 2021 Pritzker Prize 2021 Laureate.

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