The 2025 Osaka Expo has captured widespread attention—not only for its architectural ambition and spectacle, but also for breaking records and generating controversy. Its most iconic feature, a monumental timber ring designed by Sou Fujimoto, has already made headlines as a Guinness World Record-breaking wooden structure. Built on the reclaimed island of Yumeshima, the site has attracted praise and critique in equal measure. Beyond its awe-inspiring 2-kilometer circumference—parts of which extend dramatically over the water—the structure has also drawn concerns, including questions about health & safety, extreme heat, and swarms of insects that may affect the visitor experience.
This year also marks a significant anniversary: the 55th year since the 1970 Osaka Expo, held under drastically different socio-economic conditions. Comparing these two expos—both hosted in the same city—offers a rare opportunity to reflect on how the rhetoric, curatorial themes, and architectural ambitions of world expos have evolved over time. From "Progress and Harmony for Mankind" in 1970 to "Designing Future Society for Our Lives" in 2025, the shift in thematic focus reveals changing global priorities. Meanwhile, the scale and nature of architectural involvement have also transformed, from the futuristic visions of Japanese Metabolism to a more internationally dispersed group of designers concerned with sustainability, technology, and civic engagement.
Across different geographies and scales, this week's architecture news reflects a sustained focus on how cities and buildings are being recalibrated in response to evolving patterns of movement, work, and collective life. Across multiple contexts, public space and mobility remain central concerns, with streets, downtowns, and large-scale developments serving as testing grounds for new approaches to accessibility, resilience, and everyday use. Pedestrianisation initiatives and community-led visions point to evolving governance models and long-term urban strategies, while cultural and research-driven platforms continue to frame these changes within broader public discourse. In parallel, progress on major mixed-use and corporate projects underscores the growing integration of digitalinfrastructure, environmental performance, and flexible spatial frameworks within contemporary architecture.
Renzo Piano Building Workshop, in collaboration with Betaplan Architects (Athens) and landscape architect Camille Muller (Paris), has broken ground on a new cultural center in Piraeus, the port of Athens. Commissioned by The Dinos and Lia Martinos Foundation (DLMF), the project seeks to establish an international hub connected to similar art centers abroad, open to the local community, students, and visitors, and contributing to the urban and cultural fabric of the Athens metropolitan area. The complex, called KYKLOS, is planned to host contemporary art collections and cultural programming with an international outlook. Initiated in 2023, the project is currently in development, with construction planned to extend through the last quarter of 2028.
Detail of the Garifuna Kiosk Network. Image Courtesy of 24 Grados Arquitectura
How can architecture restore relevance to forgotten places? What dialogues can emerge when buildings and landscapes are treated not as blank slates, but as layers of memory, identity, and potential? For the Honduran architecture firm 24 Grados, these questions shape an approach rooted in adaptation, reuse, and contextual design. Their projects range from the restoration of old Spanish plazas and cultural centers to interventions in natural parks and coastal villages in Honduras. Each one is grounded in the belief that design can reweave relationships between people, place, and heritage.
MVRDV and Delft University of Technology Release _Le Grand Puzzle_, an Urban Study of Marseille in the South of France. Image Courtesy of HÇläne Bossy, Manifesta
In architecture, most practices revolve around delivering projects to clients. Offices are shaped by deadlines, budgets, and clear briefs. While this structure produces buildings, it rarely leaves space for architects to question broader issues — about how we live, how cities are changing, or what the future demands of design. But alongside this production-focused system, a quieter movement has emerged: studios, collectives, and foundations that prioritize research, experimentation, and reflection. These are the architecture think tanks — spaces designed not to build immediately, but to think first.
The idea of a think tank is not new. Traditionally found in politics, economics, or science, think tanks bring together experts to study complex problems and propose solutions. In architecture, their rise reveals a tension at the heart of the discipline. If architecture is to remain socially and environmentally relevant, can it continue to rely only on client-driven practice? Or must it carve out space for slower, deeper inquiry?
Across Europe and North America, pedestrianisation is increasingly being deployed as a context-specific urban strategy shaped by distinct economic, social, and spatial pressures. As cities continue to reassess the role of streets in the wake of economic shifts, climate pressures, and changing mobility patterns, pedestrianisation is emerging as a tool in current urban transformation efforts. Across London, New York, Houston, and Stockholm, ongoing pedestrian-first projects are testing different pathways toward more resilient and walkable cities, ranging from statutory planning and capital construction to research-driven visioning. London's Oxford Street is advancing through consultation and governance reform to address retail decline; New York's Paseo Park is moving from a temporary pandemic intervention into permanent infrastructure; Houston is accelerating the pedestrianisation of its downtown core in preparation for a global sporting event; and Stockholm's Superline is using design research to rethink the future of an inner-city motorway. These initiatives reveal how pedestrianisation is being actively negotiated, designed, and built today, adapting to local motivations while converging on a shared objective of streets that perform as resilient public spaces rather than traffic conduits.
Castles and fortresses often rise from strategic, commanding positions when standing alone or integrated into urban and rural landscapes. From above, they overlook the city, bearing in their imposing structures the weight of history. With their original functions now limited to contemplation, these spaces have been undergoing revaluation and reintegration into everyday urban life. Once symbols of military or political power, they are now taking on new roles through contemporary interventions that engage with their heritage without erasing their past.
Sister Plot C, Manchester. Image Courtesy of Allies and Morrison
Plot C, Sister, Manchester, a pair of linked commercialbuildings located on the north-east corner of the Sister campus, has received planning approval from Manchester City Council. Designed by Allies and Morrison for client Sister, a joint venture between the University of Manchester and Bruntwood SciTech, the scheme represents the first major new-build phase of the master plan for Manchester's emerging innovation district. With a total gross external area of approximately 81,000 square metres, the development is positioned as one of the city's largest new workplace-led projects, marking a key moment in the phased transformation of the site.
The exhibition Coming Together: Reimagining America's Downtowns, held at Washington, D.C.'s National Building Museum, explores the transformations underway in the United States' downtowns and the ways communities have organized to shape alternative urban scenarios. Curated by Uwe S. Brandes, Professor at Georgetown University, and designed by Reddymade and MGMT., it is the first of three major exhibitions within the Museum's Future Cities initiative, an interdisciplinary project examining the city as a hub, catalyst, essential building block, and reflection of society. Coming Together features examples from more than 60 U.S. cities, both large and small, highlighting lessons learned and opportunities embraced in the wake of the COVID-19 pandemic as communities adapt to lasting changes in work, housing, mobility, entertainment, and recreation. The exhibition is currently open to the public and will remain on view through Fall 2026.
Health has become a central concern in architecture, planning, and design, driven by a growing awareness of how the built environment influences physical, mental, social, and environmental well-being. In 2025, this awareness moved beyond specialized building types or performance metrics and became central to architectural decision-making, informing how spaces are conceived, built, and inhabited across diverse contexts. Architects are no longer treating health as an external requirement but as an integral condition of everyday life.
Park Hill, a large social housing complex in Sheffield, stands out as one of the most ambitious examples of modernist architecture in post-war Britain. Designed in 1961 by Jack Lynn and Ivor Smith, its innovative concept of "streets in the sky" aimed to combine high-density housing with the community spirit of traditional neighborhoods. By the late 20th century, the complex had fallen into severe neglect, marked by social problems and structural degradation that undermined both its functionality and reputation. Gradually, Park Hill became synonymous with the failure of modernism, carrying a heavy social stigma and marginalizing its residents.
Starting in the 2000s, significant efforts began to reverse this narrative through a two-phase revitalization process. The first phase, led by Urban Splash in collaboration with the architectural firms Hawkins\Brown and Studio Egret West, focused on preserving and enhancing the building's historical elements while introducing modern interventions to create a livable, functional, and attractive space. This stage demonstrated the potential of adaptive reuse in revitalizing communities and reclaiming architectural icons. The second phase of the renovation, carried out by the firm Mikhail Riches, sought to build on this initial work by introducing new elements that deepened the connection between the existing spaces and contemporary living. With an approach that combined historical sensitivity and architectural innovation, Mikhail Riches continued the process of transforming Park Hill into a landmark example of how modernist architecture can be adapted to meet current needs without losing its original identity.
Located in Barcelona's El Raval district, the Futuristic Office Building by SNOB Architects introduces a contemporaryoffice program within a consolidated and historically layered urban environment. Designed by the Lisbon-based practice and scheduled for completion around 2026, the project comprises approximately 12,000 square meters of gross built area. The building's height, massing, and proportions are calibrated in response to the surrounding fabric, reflecting the scale of adjacent structures while establishing a contemporary architectural language. Rather than presenting itself as an isolated object, the project is conceived as part of the existing city, contributing to the gradual transformation of El Raval through a controlled and context-aware architectural approach.
Construction has officially broken ground on Tokyo's new global headquarters for NTT, a major Japanese technology company. The project is a key component of PLP Architecture's Tokyo Cross Park masterplan, a large-scale regeneration development in the Tokyo metropolitan area, first announced in 2022. On December 5, 2025, construction began on the first stage of the scheme, one of four towers planned within the masterplan. The NTT Hibiya Tower, designed by PLP Architecture and developed by NTT Urban Development in collaboration with Tokyo Electric Power Company, is a 230-metre-tall, 361,000-square-metre mixed-use building and forms the central element of the 1.1-million-square-metre Tokyo Cross Park Vision. PLP Architecture serves as Design Architect for the tower, as well as Masterplanner and Placemaking Strategist for the wider development.
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.
India's built environment has, in recent years, gained visibility through a growing number of transformative architectural and infrastructure projects. Cities and towns scale faster each year, despite looming concerns around climate and economic volatility. The nation has shown resilience in balancing rapid urbanization with resource constraints; this is no small feat. India's architectural practices rarely rely on novelty alone; they are built on systems that have existed for centuries. Through ArchDaily's Building for Billions, recurring stories have highlighted the social intelligence and adaptive capacity embedded in these practices, revealing an architecture that operates less as isolated form and more as infrastructure.
Living in residences designed by renowned modern architects is a dream sought after by many. Projects that have become iconic are major attractions for new residents who value both the authorial signature and history of the building, as well as the innovative architectural solutions that have contributed to the prominence of such projects.
As for the work of Oscar Niemeyer, fluidity and flexibility may best express his plans and typologies. These features provide great potential for the architects working on renovations within these buildings. São Paulo’s Copan Building is a prime example: its 1160 units, spread over six blocks, vary from 25m² studio apartments to larger units of over 150m². Niemeyer’s extensive portfolio includes other residential landmarks in São Paulo — like the Montreal, California, and Eiffel buildings — plus others in Belo Horizonte and Brasília, even reaching as far as Berlin with the Interbau Apartment House.
In early 2025, photographer Paul Clemence documented Kö-Bogen II, a commercial and office complex designed by ingenhoven architects in Düsseldorf, Germany. The photo series focuses on the building's signature feature: its vast green façade, considered one of the largest in Europe. Referred to as a "green heart" and an "urban mountain," the building has become a landmark in the city due to its sloping surfaces wrapped in over 30,000 hornbeam plants. For Clemence, this was an unforeseen encounter during his first visit to Düsseldorf, which he describes as an unexpected meeting with a "stunning green pyramid."
