Green Infrastructure: The Latest Architecture and News

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.

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Architects carefully calibrate their relationship to the earth, adjusting foundations to soil, groundwater, climate, risk, and culture. Driven timber piles, rammed-earth platforms, and poured concrete slabs are each a response to a specific set of ground conditions, and each shapes the architecture that rises from it. The way a building meets the earth determines its durability and its limits because foundations are among the most consequential design choices an architect makes.

The city of Rotterdam sits approximately one meter below sea level, an organizing condition that shapes daily life in the Netherlands' second-largest city and is a growing preoccupation amid unstable coastal conditions. The city occupies the delta of the Rhine and Maas rivers, a landscape that was never naturally dry but has been kept functional through centuries of hydraulic intervention. The water boards in this region are among the oldest democratic institutions in the world, created in the thirteenth century to manage shared water drainage and still operating today as elected bodies with technical capacity. As sea levels rise and rainfall across Northern Europe grows less predictable and more extreme, Rotterdam faces a significantly increased risk of coastal storm surges and urban flooding driven by overwhelmed drainage infrastructure.

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As climate variability intensifies, extreme storms are becoming more frequent in some regions while water scarcity deepens in others. Architects are increasingly pressed to reconsider how buildings engage with rainfall as an environmental force and a design resource. How can architecture move beyond shedding the excess water to actively collect, store, and reuse it? What would it mean to treat rainwater as a material that shapes resilient and meaningful spaces?

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Urban masterplans remain an exploratory ground for unbuilt speculation, offering insight into how cities might recalibrate mobility, ecology, and collective life in response to accelerating environmental and social pressures. In this Unbuilt edition, submitted by the ArchDaily community, the selected projects bring together a range of large-scale proposals that examine urban centers, waterfront districts, infrastructural corridors, and cultural landscapes as spatial frameworks for reconnection and resilience. Rather than treating the masterplan as a rigid blueprint, these projects approach urbanism as an adaptive system shaped by climate, topography, infrastructure, and public space.

Across varied geographies, from Northern European town centers and Mediterranean coastal districts to Central Asian polycentric hubs and Gulf megacities, the proposals explore diverse architectural and urban strategies. They range from park-led civic transformations built over highway tunnels to elevated pedestrian networks above active transport systems, mixed-use blocks structured by historic planning logics, marina developments integrating environmental stewardship, and research-driven models for equitable landscape urbanization.

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Cities around the world share a common goal: to become healthier and greener, supported by civic infrastructure that restores ecosystems and strengthens public life. The question is how to reach this. Global climate targets, local building codes, and municipal standards increasingly guide designers and planners toward better choices. Still, many cities struggle to translate these frameworks into everyday, street-level comfort and long-term ecological protection. What happens if the city is no longer treated as a traditional city, but as a national park?

National parks operate through systems of protection that treat land as a network of ecological relationships rather than a collection of isolated sites. They establish a shared baseline for what must be preserved, maintained, and made accessible over time. When this logic is applied to the urban environment, success can inspire pride and a sense of shared responsibility among designers, policymakers, and residents, fostering a collective commitment to health, habitat, and civic infrastructure.

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Cities are warming at roughly twice the global rate, a trend accelerated by rapid urbanization. While rising temperatures are reshaping daily life worldwide, some towns and neighborhoods, often the most vulnerable and least resourced, are warming more than others. The reason comes down to the urban environment. Built infrastructure, such as roads, buildings, sidewalks, and public spaces, determines how heat moves through a city, where it accumulates, and how long it remains trapped. No matter the climate zone or geographical location, shade remains the most effective and immediate way to cool pedestrians and relieve the built environment.

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January 26 marks the International Day for Clean Energy, an initiative aimed at raising awareness and mobilizing action for an inclusive transition from fossil fuels, such as coal, oil, and natural gas, to power generation systems with lower greenhouse gas emissions and fewer pollutants. The term "clean" signals a fundamental shift away from extractive, finite, and exhaustible energy sources toward systems based on renewable resources or on capturing energy embedded in natural processes. In a world grappling with climate change, clean energy plays an important role in reducing emissions and expanding access to reliable power. However, being labeled "clean" does not exempt these systems from the impacts associated with their production, deployment, and commercialization. In this context, architectural knowledge related to space, materiality, and habitation becomes relevant for supporting a transition toward energy systems that are sustainable over time. As stated by the United Nations, the science is clear: to limit climate change, reliance on fossil fuels must end, and buildings must be heated, lit, and electrified through clean, accessible, affordable, sustainable, and reliable power sources.

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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.

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Cities bring together the best and worst of the human condition. They concentrate opportunities for work, social networks, and cultural production, but they also expose deep social inequalities. Among the many forms of urban exclusion are limited access to transportation, housing, leisure, or safety issues. One form that is rarely discussed is thermal inequality. In lower-income neighborhoods, where there are fewer trees, parks, and permeable surfaces, heat accumulates and thermal discomfort dominates, resulting in higher energy consumption and health risks. As concern about the climate crisis grows, this discussion becomes more urgent: extreme heat is no longer just a climatic phenomenon but also a spatial expression of inequality.

Infrastructure has long defined the backbone of cities by linking people, landscapes, and economies through systems that often go unnoticed until they fail. Today, as global challenges demand more adaptive and human-centered responses, architects are rethinking what infrastructure can be: not just a framework for movement and utility, but a catalyst for ecological restoration, cultural continuity, and civic imagination. The following unbuilt projects, submitted by the ArchDaily community, explore this expanded role of infrastructure, where airports, bridges, industrial parks, and pedestrian networks become architectural expressions of connection and care.

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The concrete canyon of Melbourne's Degraves Street was once a stark service corridor in functional obscurity. Today, the narrow laneway now pulses with life beyond its famous café. Native grasses cascade from carefully positioned planters while small shrubs create cooling microclimates. Challenging traditional ecological design models, community-led approaches to biodiversity invite a reimagining of how architects, planners, and communities collaborate to develop biodiverse urban futures.

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Titled "Chinampa Veneta", the Mexican exhibition for the 19th International Architecture Exhibition – La Biennale di Venezia seeks to promote reflection on how we inhabit, cultivate, and design the world we share. In the face of the global ecological crisis, the project draws attention to chinampas, an ancient Mesoamerican agricultural system with more than four thousand years of history. This ancestral knowledge, interweaving landscape, infrastructure, and technique, is reimagined in the context of the Biennale, activating a living environment within the city of Venice. The Mexican Pavilion consists of two "enactments," one located in the Arsenale and the other built on water.

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Ebenezer Howard's verdant visions for cities have spread eastwards, far beyond his British roots. In the 1900s, city planning welcomed the Garden City Movement as a champion of good design - a response to Western industrial urbanization. Soon, Asian cities conceived their archetypes, juggling local constraints in climate and density. Designs and development, from colonial-era experiments to contemporary mega-projects, have embraced and reinvented Howard's vision well into the 21st century.

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In the United States, nearly 1 in 10 children are affected with asthma, a condition with rates significantly higher in urban areas of the country. However, in a community just outside Atlanta with a population of more than 300 children, not a single case of the condition has been reported. This is by design. Most cities and neighborhoods across the country are not designed with human biology in mind, an oversight that contributes to the growing prevalence of cardiovascular disease and mental health challenges. Are we treating chronic conditions as purely medical, when they may actually be symptoms of poor design?

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As the global population continues to surge, cities become increasingly complex ecosystems, dense and bustling environments home to millions of people. Today, more than half of the world's population lives in cities, which is expected to grow dramatically in the coming decades. This rapid urbanization presents a complex set of challenges for the architects and planners tasked with creating spaces that can accommodate urban residents' lives.

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Foster + Partners is developing a comprehensive masterplan for Maratué, a 1,045-hectare site located along the Puchuncaví coast in Chile. Developed for Inmobiliaria Maratué, the project seeks to reconnect the existing town of Puchuncaví with its coastal edge, while conserving and enhancing the region's diverse natural landscapes. The masterplan aims to create a sustainable framework for long-term development, balancing residential growth with environmental protection.

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Reed Hilderbrand Landscape Architecture firm has unveiled images of its strategic master plan for Texas' San Antonio Botanical Garden, in the United States. The plan is designed to guide the future of this public landscape, reflecting long-term objectives focused on accessibility, conservation, and horticultural education. The vision includes a new horticultural campus and a public greenhouse for the site, designed by SO-IL, an architectural design firm based in New York whose 450 Warren housing project in Brooklyn was selected by ArchDaily's audience as the Building of the Year 2024 in the Housing category. The master plan aims at a more ecologically sustainable environment while enhancing the visitor experience across the garden's 38-acre landscape.

The Detroit Cultural District has announced an ambitious initiative to reshape its urban landscape. This multi-phased project led by the Detroit Cultural Center Association (DCCA) in partnership with Design Leads Akoaki and Agence Ter, will transform the district's character, creating a more vibrant and accessible environment for residents and visitors alike. The project builds upon a comprehensive master plan, outlining a 15-year vision for the 80-acre campus in Detroit, Michigan. The plan's guiding principles focus on unifying the district's twelve institutions, improving pedestrian flow, and fostering a stronger sense of community.

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