Created by California surfers who wanted to bring the lines of surfing onto asphalt, skateboarding soon outgrew its role as a simple alternative for flat days. It established itself as a practice that reads the city through a different logic, reinterpreting steps, handrails, walls, and interstitial spaces as possible lines, challenges, and opportunities. Over time, it evolved into a global urban culture, a way of inhabiting and transforming public space through movement. What was once marginal has become a catalyst for urban activation, community building, and new uses for overlooked spaces. At its core, skateboarding reveals how many cities coexist within the same city, depending on who moves through them and how each person is able to reinterpret their surroundings.
For monuments worthy of sustained admiration, conservation practices have been selectively mobilized to reinforce their prestige and secure their place at the center of heritage narratives. Structures whose vernacular ought to be passed down miss the discerning eye of the experts. Rowhouses, shopfronts, and neighborhood structures that form the fabric of our cities are often left to deteriorate beyond repair. Much more is lost, apart from aesthetics.
Public spaces remain some of the most dynamic sites for unbuilt architectural experimentation, revealing how cities and architects can imagine accessibility, gathering, and civic identity. In this curated Unbuilt edition, submitted by the ArchDaily community, the selected proposals examine parks, pedestrian corridors, cultural landscapes, and open-access urban environments that invite people to meet, move, rest, and participate in collective life. Rather than treating public space as leftover terrain, these projects position it as essential infrastructure—shaping urban health, memory, and social interaction.
Jurong Lake Gardens is one of Singapore's newest national gardens, a 90-hectare urban oasis for the community. Elevate’s PondGard EPDM membrane was used to waterproof the pond. Image Courtesy of Holcim
The future of urban planning and architecture is promising if the world, collectively, looks beyond the concept of mere sustainability and instead embraces a nature-positive approach. As global population growth drives rapid urbanization—requiring humanity to build the equivalent of a city the size of Madrid every week for decades to come—the construction sector faces a defining challenge: how to build durable, energy-efficient, and resilient urban environments in harmony with natural ecosystems.
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.
When Hudson Yards opened in Manhattan in 2019, it promised a new urban neighborhood built from scratch. 16 towers with 4,000 residential units were erected in hopes of creating a strong community. Despite its lavish amenities and lofty public plazas, a peculiar emptiness persisted. The development felt anonymous, speaking to a fundamental truth about human social capacity.
2025 marks the 60th anniversary of Singapore's independence, commemorating its separation from Malaysia on August 9, 1965. The occasion is celebrated in the country's national pavilion at the 19th Venice Architecture Biennale with a multisensory installation that honors Singapore's diversity and reimagines city-making through food, culture, and collective design. Titled RASA–TABULA–SINGAPURA, the installation invites visitors to take a seat at the Table of Superdiversity: an enticing reimagining of city-making and nation-building through the universal act of dining. According to the curatorial team from the Singapore University of Technology and Design (SUTD), the purpose of the installation is to showcase how the convergence of multicultural differences, collective histories, design, and new technology creates opportunities for more inclusive and adaptive urban futures.
Shenzhen is China's first Special Economic Zone（SEZ), serving as a window for China's Reform and Opening-up and an emerging immigrant city. It has evolved into an influential, modern, and international metropolis, creating the world-renowned "Shenzhen Speed" and earning the reputation of the "City of Design." Architectural design stands as the most intuitive expression of Shenzhen's spirit of integration and innovation. Over the past decade (2015-2025), the development of urban architecture in Shenzhen has closely integrated with its open and inclusive urban character, ecological advantages of being nestled between mountains and the sea, and the local spirit of blending traditional culture with innovative technology, showcasing Shenzhen's unique charm and robust vitality across multiple dimensions.
Montreal, the second largest city in Canada is home to a wide array of heritage residential architecture, most of it dating to the 19th and early 20th-century. These are particularly abundant in some of its central neighborhoods like the Plateau Mont-Royal. Interestingly, their preservation is not accidental; it is the result of decades of advocacy by influential figures who recognized the value of the city's built environment, such as Phyllis Lambert and Blanche Lemco Van Ginkel. Efforts like theirs were instrumental in landmark preservation battles that helped to ensure current municipal support. Today, the city has implemented a set of comprehensive heritage protection laws designed to safeguard the integrity of the city's historic neighborhoods.
When Archigram published their fanatical vision for pneumatic cities and walking megastructures in the 1960s, they seemed to be designing buildings. Beneath the surface, the avant-gardeists were pushing culture through radical alternatives to lifestyles and forms of organizing in the city. Laboratories found themselves between the lines of copy on Domus or Casabella magazines, propositions doubling as blueprints for the civilizations to come. From Gropius's Bauhaus in 1919 to Arcosanti's desert experiments in the 1970s, architecture operated as a form of cultural prophecy. Built form was the argument. The drawing was the vision. Today, we live in a world that remarkably resembles what the starchitects of the 1900s imagined - modular construction, interconnected digital cities, and automated systems. Yet contemporary architecture rarely proposes culture with the same totalizing confidence.
India carries an ancient lineage of tradition that has long shaped the very conception and crafting of its cities. Vastu Shastra is one such tradition, more a science than a belief, intimately woven into the principles of architectural design. The practice remains widespread and highly regarded, with 93% of homes designed to align with Vastu principles. As India urbanizes at an unprecedented pace, projected to add 416 million city dwellers by 2050, Vastu Shastra continues to influence billions of real estate decisions amid the trials of modern city living. How might an 8,000-year-old spatial science evolve to guide the design of cities housing millions?
When exposed to heat, the body activates several physiological mechanisms to maintain thermal homeostasis. However, these natural defenses are often overwhelmed in our modern cities.In an urban environment defined by heat-absorbing asphalt, concrete, and a lack of green spaces, these mechanisms become inefficient. If the surroundings are excessively hot, humid, or poorly ventilated—conditions amplified by the Urban Heat Island effect—the core body temperature begins to rise, and the risk of serious complications increases, ranging from cramps and exhaustion to potentially fatal heat strokes.
Farrells, the London-based architecture and urban design practice, announced earlier today the death of its founder, architect Sir Terry Farrell. The firm highlighted Farrell's commitment to questioning architectural convention and his advocacy for more responsible, contextual, and community-driven approaches to urban development, seeking creative alternatives to wholesale demolition and rebuild. His death follows that of his early collaborator Nicholas Grimshaw, with whom he founded the Farrell/Grimshaw Partnership in 1965. Together they produced functionalist, modern buildings defined by their structural clarity, before Farrell established his independent voice as one of the leading figures of British Post-Modernism, designing some of the movement's most recognisable works, including London's MI6 Building and the TV-am studios in Camden.
"The public square and civic infrastructure are the front lines against this kind of attack", proclaimed then-President of the American Institute of Architects, Thomas Vonier. The decades since 9/11 and mass violence have pressured cities, in the United States and globally, to reconsider what "safety" means. Is it about barriers, bollards, surveillance? Or is it about trust, visibility, evidence, resilience? Several projects confront these questions at various scales to demonstrate how architecture and forensic thinking can collectively protect communities and civic life.
The City of Copenhagen has announced Team SLA as the winner of a design competition to create a new, large-scale urban park in Nordhavn. The project, titled "Nordør – New Park", was designed by Team SLA and By & Havn, and envisions a 30-hectare (75-acre) coastal nature park. Led by the design studio SLA, Team SLA includes VITA Engineers, Urban Agency, Aaen Engineering, Pihlmann Architects, Buro Happold, Kerstin Bergendal, Holdbart, and Aiming Spaces.
A "nature park" is a protected area where conservation is balanced with sustainable development and human use. It often encompasses human-shaped cultural landscapes and integrates strategies for regional development, supporting local communities and promoting the conscious use of the land. This framework allows the proposal to be understood as a platform for recreation, eco-tourism, environmental education, research, and regional growth.
An architecture degree may provide a vast curriculum, but many of the skills needed for a project lie outside the discipline. This is especially true for urban-scale projects. They demand expertise in areas like traffic studies, structural calculations, landscape design, and technical installation forecasting. These are often seen as "complementary" but are, in fact, fundamental to the overall design.
In a country like Portugal, with a relatively small but geographically diverse territory, the challenge of connecting different parts of the territory – whether to cross a river or link one level of a city to another – is a constant one. Its largest metropolitan areas, such as Lisbon and Porto, share a rugged geography of steep valleys and hills. These features led to the development of elevators and funiculars, like the Santa Justa Lift and the Bica Funicular in Lisbon, and the Guindais Funicular in Porto. Today, besides improving urban mobility, they have become tourist landmarks.
