Pico House, part of Los Angeles Plaza Historic District. Image by Daniel L. Lu - Own work, CC BY-SA 4.0
Today, the urban form of Los Angeles is characterized by 20th-century sprawl and extensive automotive infrastructure. However, the physical reality of the city's original core reveals a more complex history that is deeply rooted in Hispanic heritage. In fact, Los Angeles did not originate from the standardized American land system that defines most of the United States' territory. Instead, it is a product of the Spanish urban tradition in the Americas, which followed a structure repeated across major cities on the continent. The intersection of these systems created a layered urban geometry and history that remains visible in the city's contemporary street patterns.
When Los Angeleswas founded in 1781 as a pueblo by Felipe de Neve, it was an outpost of the Viceroyalty of New Spain. Viceroyalties were political divisions of the Spanish territories in America, and by the late 18th century, New Spain was vast. It stretched from southern Costa Rica, all the way north to Alta California, bordering the east at the Mississippi River and the newly independent United States of America. At this time, Mexico City functioned as the primary administrative and economic hub, leaving frontier regions like Alta California to rely on a specific triad of settlements: missions (religious), presidios (military), and pueblos (civilian).
Ambulance for Monuments is a first-aid initiative dedicated to safeguarding Romania's endangered built heritage, operating in a race against time to prevent collapse and irreversible loss. The project responds to the growing vulnerability of historic structures, from Saxon fortified churches and manor houses to wooden churches and rural landmarks, many of which no longer benefit from the community networks that once sustained them. In a country deeply affected by emigration since 1990, where nearly half the population still lives in rural areas, entire villages have lost the people, skills, and everyday care that once kept these monuments standing.
Built around a mobile intervention unit, an "Ambulance" equipped with tools, scaffolding, and on-site equipment, the initiative delivers urgent stabilization works that buy time for endangered buildings. Rather than replacing full restoration, these strategic interventions preserve historic fabric, ensure structural safety, and keep long-term conservation and adaptive reuse possible.
As housing shortages and affordability challenges intensify across global cities, this week's architectural discourse centers on how design, policy, and adaptive strategies intersect to shape the future of urban living. Initiatives range from grassroots movements and legislative reforms aimed at expanding access to housing to innovative models that rethink ownership, development, and community engagement. At the same time, architects are reimagining existing structures and districts, transforming underused offices, historic landmarks, and unfinished buildings into mixed-use, culturally significant, or publicly accessible spaces. Across scales, these stories illustrate how architecture negotiates scarcity, value, and social priorities, demonstrating its capacity not only to produce new buildings but also to recalibrate urban environments in ways that balance heritage, sustainability, and human experience.
A building still being adjusted, repaired, and debated is declared World Heritage. Another, equally influential, must survive five centuries before anyone considers protecting it. This is not an anomaly in the heritage system; it is the system. Across the world, architecture does not age at the same pace because time itself is not neutral. It is cultural, political, and deeply uneven. What we call "heritage" is not simply old architecture; it is architecture that has reached the right moment in a particular place.
Preserving historic buildings requires simultaneously addressing technical, environmental, and regulatory demands while maintaining the material, cultural, and symbolic continuity of what already exists. As the understanding consolidates that the most sustainable building is the one that is already standing, and that preservation also involves construction knowledge, material traditions, and the social fabrics from which they emerged, these same buildings are increasingly confronted with more rigorous contemporary parameters. Energy efficiency, safety, carbon emission reduction, and regulatory compliance have become unavoidable references, placing architecture before a central tension: how to update what already exists without breaking the continuity that sustains its heritage value.
New School Building in Bhadli Village. Photo credit: Somaya Sampat.
In 2026, the annual Paul Mellon Lecture will be given by architect and urban conservationist Brinda Somaya. Drawing on decades of experience, she will explore the idea that architecture is not just about buildings and aesthetics but also about people, politics and social responsibility.
Historic center renewal has become a recurring strategy in Central American cities seeking to reassert the symbolic, economic, and functional relevance of their traditional cores. These processes often combine physical rehabilitation, institutional investment, and stricter control over public space. San Salvador offers a recent and instructive case, which allows for understanding of how interventions in inherited civic spaces balance infrastructure improvement with heritage conservation and social regulation. It also enables the assessment of how these choices resonate within broader debates on urban transformation in the region.
Qalandiya Rendering. Image Courtesy of RIWAQ – Centre for Architectural Conservation
Qalandiya: the Green Historic Maze, developed by RIWAQ – Centre for Architectural Conservation, has been awarded the Grand Prize at the Holcim Foundation Awards 2025, recognizing its sensitive and deeply contextual approach to heritage conservation in Palestine, selected among the 20 winners of this year's edition. Located in Qalandiya, north of Jerusalem, the project reactivates a historic village center long affected by political fragmentation, neglect, and spatial disconnection. Through an incremental rehabilitation strategy, the project restores deteriorated structures using traditional knowledge, local stone masonry, and native materials, transforming abandoned fabric into active public spaces while reinforcing environmental resilience through passive climate strategies and landscape-based infrastructure.
Heritage restoration has always been an intricate process that requires delicate balancing between preserving the integrity of historic materials while integrating contemporary techniques that can enhance accuracy, efficiency, and resilience. With the restoration process of Parliament Hill in Ottawa, Canada's capital city, this intersection of tradition and technology is now on full display. The East Block, built in 1865, offers a compelling example of how digital tools can support the efforts of heritage restoration and contribute to a centuries-old craft such as stone carving.
In cities across the world, the relics of industrial production have become the laboratories of a new urban condition. Warehouses, power plants, and shipyards, once symbols of labor and progress, now stand as vast empty shells, waiting to be reimagined. Rather than erasing these structures, architects are finding creative ways to adapt them to contemporary needs, transforming spaces of manufacture into spaces of culture, education, and community life.
This shift reflects a broader change in architectural priorities: building less and reusing more. The practice of adaptive reuse responds simultaneously to environmental urgency and to the need for cultural continuity in urban environments.
The quintessential symbol of Manhattan, Waldorf Astoria New York officially reopened for the public this year after an extensive renovation. Over its long history, the property has undergone numerous transformations, from its 19th-century beginnings to the modern landmark that stands between Park Avenue and Lexington Avenue.
Reimagining a building that pioneered modern hospitality—a jewel in New York's skyline—posed a challenge that required close collaboration between preservationists, 3D visualizers, architects, and designers. Together, they worked to preserve its protected architectural heritage while meeting contemporary expectations for craftsmanship and comfort.
Edinburgh Castle in Scotland’s Capital. Image by 瑞丽江的河水, via Wikimedia Commons (CC BY-SA 4.0)
Edinburgh, Scotland's capital, has long been recognized for its rich cultural history and intricate urban fabric. The city thrives within its museums, tenement housing, and shops nestled in Georgian buildings. In 2022, Time Out ranked Edinburgh as the world's best city, citing its efficiency across community building and urban systems such as public transport. However, as climate change makes its effects progressively visible at an urban level, the city inevitably runs into a pressing dilemma: how to sustain this quality of life in increasingly difficult conditions.
The journey toward this balance unfolds through several interconnected strategies, such as retrofitting, adaptive reuse, circular design, and community collaboration, each contributing to Edinburgh's evolving vision of a sustainable urban future.
Architecture—one of the few cultural artifacts made to be publicly lived with, preserved, and often capable of standing for centuries—contributes significantly to the cultural identity of places and people. Historically, buildings have expressed institutional attitudes, influence, and power; they are clear demonstrations of culture. Yet longevity complicates preservation: when a structure is rebuilt, repaired, or entirely reassembled, in what sense is it still the same building?
There's the classic Ship of Theseus puzzle from Plutarch. if a ship's planks are replaced one by one over time, is it still the same ship? Thomas Hobbes adds a twist—if the original planks are reassembled elsewhere, which ship is "the original"? The paradox tests what grounds identity: material fabric, continuous use and history, or shared recognition. In architecture and conservation, it reframes preservation as a choice among keeping matter, maintaining form and function, or sustaining the stories and practices that give a place meaning.
When approaching the design of cultural spaces such as museums, performance venues, or places of research and study, architecture and design professionals often have to assemble pieces of a uniquely challenging puzzle in order to make the structure resonate with a variety of visitors and occupants. Hitting the right chord can be difficult, especially when trying to combine forms into a whole that pays respect to a building's intended use while being timeless in its universality.
One way of making sure a sense of culture is omnipresent: adaptive reuse. The practice of breathing life into historic structures has been on the rise in recent years and is particularly well-suited to creating spaces that address and embody contemporary issues while connecting their inhabitants to the past. But it's not just a sense of updated heritage that makes them stand out; adaptive reuse buildings can fight urban sprawl and unsustainable building practices simply by way of existing.
The Royal Institute of British Architects (RIBA) has revealed the six shortlisted projects for the 2025 RIBA Stirling Prize. Since its establishment in 1996, the prize has recognized works that respond to contemporary challenges while shaping more inclusive futures. This year's shortlist spans a diverse range of scales and programs, including the restoration of one of the nation's most iconic landmarks, a pioneering medical research facility, a contemporary almshouse designed to reduce isolation among older residents, a university's "factory for fashion," a fully accessible home, and a creative house extension. The winner of the award will be announced live at the Stirling Prize ceremony on 16 October in the Roundhouse, London.
In preserving architecture, there are many possible approaches—ranging from treating a building as a static monument, meticulously restoring it in situ to the point of limiting public access, to more adaptive strategies that reprogram and modify interior spaces while retaining key architectural elements such as materiality and structural form. Yet one method stands apart, both in ambition and in controversy: to deliberately dismantle a building—brick by brick—meticulously label and document each part, and store it until a new site, purpose, or narrative emerges. Then, to reassemble it anew, possibly for an entirely different use. Though the original context is lost, this strategy aims to preserve cultural significance through transformation rather than stasis. This is the story of Murray House in Stanley, Hong Kong.
Originally constructed in 1846 as officers' quarters for the British military in Central, Murray House was one of the earliest examples of neoclassical architecture in Hong Kong—a unique and enduring trace of the city's colonial past. Its robust granite colonnades and symmetrical façade stood as a symbol of classical permanence. During the Japanese occupation of Hong Kong in 1941, the building's function was repurposed as the command center for the Japanese military police. It survived the war and continued to house various government departments throughout the postwar decades.
