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In many Latin American cities, peripheral neighborhoods have historically had less access to the resources that make urban life more than just livable. Housing, transportation, and public services are the usual markers of that gap. But there is another gap that is harder to quantify: the absence of places where people can gather, learn, rest, and participate in collective life. When those spaces do not exist, the city not only fails to provide a service. It fails to acknowledge a presence.

In recent decades, a growing number of projects have tried to address that absence directly. Rather than focusing only on physical infrastructure, they invest in spaces designed to support education, culture, recreation, and community, often merging several of those functions within a single building in neighborhoods where those spaces are otherwise limited.

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In the current context of rapid urban environmental changes, such as heatwaves and droughts, new priorities are emerging in the design of public spaces. "Rewilding" refers to the practice of restoring self-sustaining ecosystems through the reintroduction of biodiversity, implementing strategies to reverse the effects of habitat loss, species decline, and ecosystem degradation. These strategies can be identified in this selection of conceptual projects submitted by ArchDaily readers, where architecture is used as a tool to restore ecological balance among species, inverting its modern role as an agent of ecological disruption.

Faced with the reality that climate change is making cities increasingly unlivable, citizens are confronted with the choice of either leaving or transforming their environments. The unbuilt projects compiled in this article offer transformative alternatives for more livable cities, combining construction, architectural, and landscape design strategies across urban parks and suburban interstitial spaces. As ecological laboratories, they incorporate a multispecies perspective into the design process, adopting a concept of time better suited to the development of ecosystems.

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Long before it becomes a matter of performance, comfort, or energy efficiency, natural light is a way of giving presence to architecture. It reveals the texture of a wall, the depth of an opening, and the silent passage of time within a space. In works as distinct as those of Tadao Ando and Alvar Aalto, daylight appears as an essential material of design: in some cases, guiding the eye toward contemplation; in others, making spaces feel more human, welcoming, and connected to everyday life.

Within a 36-hour window between June 24 and June 25, four significant earthquakes struck three different regions of the world. A magnitude 7.2 earthquake shook Japan's northeastern coast, a magnitude 5.6 event was recorded in Northern California, and two major earthquakes measuring magnitudes 7.2 and 7.5 occurred just 39 seconds apart along Venezuela's northern coast. Although their close timing prompted speculation online, seismologists confirmed that the events were unrelated, occurring independently along different tectonic plate boundaries.

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Aino and Alvar Aalto's Paimio Sanatorium is a recognized example of modern architecture for healing, representing a patient-centered approach to hygienism that treated the building itself as a medical instrument. Built between 1929 and 1933, it was designed as a nature-oriented tuberculosis sanatorium, later used as a hospital, and today operates as a tourist attraction. The property comprises the main building together with fourteen additional structures, granted protection in Finland in 1993 under the Finnish Building Protection Act. The complex was included on UNESCO's tentative list in 2004 and is part of the "Aalto Works" nomination, with a decision expected in July 2026. Snøhetta has developed a masterplan representing a new vision for the modernist complex, reimagining it as a destination combining hospitality, wellness, cultural spaces, and arenas for international dialogue.

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In an industry defined by building codes, climate urgency, and the pressures of the real estate market, the architectural competition has quietly become one of the discipline's most generative spaces. Unburdened by budgets, clients, or city regulations, competition entries allow architects to think at the edge of what the built environment could be, and increasingly, that speculative work is being taken seriously as a cultural and intellectual contribution in its own right. Buildner's Unbuilt Award, now in its second edition, is one of those efforts, by treating the unbuilt project as a platform for architects and designers to share concepts that challenge boundaries and inspire future possibilities. In this way, competitions like this allow architecture professionals and students to showcase ideas and visions that, even without being constructed, reflect the spirit of exploration and ingenuity in architecture.

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