Every three years, the International Union of Architects' (UIA) World Congress lands in a different city, under a different theme set years in advance. A quick mapping of these host cities reveals a deliberate pattern: throughout the decades, the UIA has purposefully chosen a wide range of venues across all continents, rendering each edition a snapshot of what mattered in that specific place, at that exact moment. The result of this geographic rotation has been a diverse kaleidoscope of conversations, analyzing the profession from countless angles and adapting it to changing times. But 2026 is different; this time the UIA is repeating a host city for the first time: Barcelona, under the theme "Becoming. Architectures for a planet in transition".
It is afternoon in the summer, and the nave of the Sagrada Família is saturated with warm colors. Shafts of amber and crimson sweep across the stone floor, shift as a cloud passes over Barcelona, then deepen again. Around you, visitors slow without quite realizing it. Some raise their phones — not to capture the architecture, but to step into the light itself, positioning themselves in a pool of orange or gold as if the colours were something you could wear.
They are, without knowing it, doing exactly what Gaudí intended: surrendering, however briefly, to the sensation of being bathed in something larger than themselves.
Modern cities are running on performance indicators. They move millions of people each day, concentrate capital, separate land uses, and sustain complex systems of logistics and consumption. In that sense, the city functions as a system to be continually adjusted and optimized.
Today's dominant metrics are familiar and widely witnessed: vehicles per hour, average commute times, floor area ratios, parking turnover, housing starts, and tax revenue per parcel of land. These figures describe a city that is legible through efficiency. They are inherited from an industrial logic, where urban space is treated more like a production mechanism than a lived-in environment. In this framing, cities begin to mimic the needs and metrics of a machine.
Ambrosian Monastery, Milan. Image Courtesy of Stefano Boeri Architetti
As global urban challenges intensify alongside growing environmental, social, and cultural pressures, this week's news reflects how institutions, exhibitions, and restoration projects are highlighting the relationship between the built environment and collective experience. From international forums addressing housing insecurity and urban resilience to cultural events examining memory, identity, and spatial perception, positioning architecture as both a framework for policy and a medium for critical reflection. At the same time, major restoration and redevelopment initiatives highlight a renewed focus on preserving historical continuity while adapting heritage sites and cultural institutions to contemporary forms of use, accessibility, and public engagement.
Heritage, in interiors, is increasingly rarer to be only a matter of preservation alone. More often it arrives as friction: the encounter between what a building already is—its plan logic, its scars, its structural inconsistencies—and what contemporary life demands of it.
Some of the most convincing projects today are not those that "restore" an interior back to a single moment, nor those that erase the past under a seamless new skin. They are the ones that stage a relationship between old and new—allowing contrast to do more than tell a story, and letting the clash become a pragmatic tool for construction, budget, and speed.
Casa Batlló in Barcelona has unveiled the restored Third Floor of the building, opening the last original residence preserved from Antoni Gaudí's 1904-1906 transformation of the property to the public for the first time. Led by restoration architect Xavier Villanueva and developed over three years through an archaeological-style conservation process, the intervention recovers a largely intact domestic environment that had remained inhabited by descendants of the Batlló family for more than a century. Adapted into a series of private rooms for gatherings, cultural events, and experiences, the restored apartment combines heritage preservation with a contemporary interior design intervention by Paola Navone – OTTO Studio, establishing a new program for one of Barcelona's most recognized architectural landmarks.
The UIA World Congress of Architects 2026 Barcelona has released its full program, outlining the structure, participants, and range of activities scheduled to take place from June 28 to July 2, 2026. Expanding on the previously introduced theme, Becoming. Architectures for a Planet in Transition, the Congress is conceived as a distributed event across multiple venues and urban contexts rather than a single-site conference. Organized by the International Union of Architects (UIA) in collaboration with the Higher Council of the Colleges of Architects of Spain (CSCAE) and the Architects' Association of Catalonia (COAC), the event is expected to gather approximately 10,000 participants and 250 speakers from more than 130 countries.
European City Context. Image Courtesy of ReGreeneration
The ReGreeneration project, a Horizon Europe project led by Inetum and supported by C40 Cities, ARUP, Placemaking Europe, and several others, operates as an active collaboration with local governments, private companies, academia, and civil society organizations at the intersection of urban regeneration, green public spaces, and neighborhood-scale design. Its premise addresses how European cities are built and maintained and how they experience a changing climate, arguing that cities must fundamentally change to remain livable under accelerating climate pressures.
Aerial view of the Port Vell area where Liceu Mar is set to be built. Image Courtesy of Gran Teatre del Liceu and Port de Barcelona
The city of Barcelona has announced the five finalist teams selected to advance in the international competition for Liceu Mar, a new cultural venue planned for the Port Vell waterfront. Promoted by the Gran Teatre del Liceu in collaboration with the Port of Barcelona, the project is conceived as a second venue for the historic institution, expanding its artistic and civic role while strengthening its international presence. Bringing together a group of internationally recognized and locally rooted practices, the shortlist underscores the project's global relevance, with the winning proposal expected to be announced in autumn 2026.
More than three decades after previously hosting the event, Barcelona is set to welcome the UIA World Congress of Architects 2026 Barcelona (UIA2026BCN), bringing the global architectural community back to the city between 28 June and 2 July 2026. Organized under the theme "Becoming. Architectures for a Planet in Transition," the Congress is expected to gather approximately 10,000 participants from over 130 countries, including practitioners, researchers, and students. Rather than being confined to a single venue, the event will unfold across multiple locations along the Mediterranean seafront, among them the Three Chimneys complex, positioning the city itself as an active platform for exchange, discussion, and public programming.
