This week's curated selection of Best Unbuilt Architecture highlights different competition-winning designs submitted by the ArchDaily Community. From large scale urban developments to small interventions in the landscape, from commercial projects to public spaces and urban planning strategies with an environmental focus, this article showcases a variety of design approaches, programs and scales. The proposals featured are the results of local and international competitions, either creative concepts or projects currently in progress.

The award-winning entries include a range of different projects, designed by both young architects and established firms. An adaptive reuse project for office towers in New York, the redevelopment of an industrial site in China, an abstract installation for a Russian festival, or a masterplan focused on climate resilience and ecosystems protection are a few of this week's highlights.

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What do Katuma, Hagadera, Dagahaley, Zaatari or Ifo bring to mind? They are truly beautiful names, and could easily belong to Italo Calvino's 55 invisible cities.

But they are not invisible cities, they are informal settlements in Kenya and Jordan, home to between 66,000 and 190,000 refugees, mostly from bordering countries, supposedly temporary camps that half a century later are still with us today. Generally lacking in infrastructure, some have schools and hospitals, and Zaatari even has a circus academy, but for most of the people who live there, they are the only cities they have ever known.

Urban planning is often based on the assumption of ongoing demographic and economic growth, but as some environments face urban shrinkage, a new array of strategies comes into play. The shrinking city phenomenon is a process of urban decline with complex causes ranging from deindustrialization, internal migration, population decline, or depletion of natural resources. Referencing the existing research on the topic, the following showcases approaches to this phenomenon in different urban environments, highlighting the need to develop new urban design frameworks to address the growing challenge.

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If we ever wonder what the future could look like, all we have to do is take a look into our past, and observe how far we have come since thousands, a hundred, or even ten years ago. Life was radically different back then and it will be just as different in the future. And since we are well aware that the future merely resembles the present, we have the possibility to shape our future the way we want to. TASCHEN's latest BIG book installment Formgiving. An Architectural Future History explores the past, present, and future, drawing a timeline of the built environment from taking shape to giving form.

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Since their inception in 1896, modern-day Olympics have been regarded by hosting cities as an opportunity to project to the world a specific image of themselves, to subsidize large infrastructure projects, or to rapidly unfold redevelopment schemes. Past the frequently discussed eye-catching stadiums, there is a complex story of Olympic urbanism, which encompasses the large scale developments catalyzed by the event. Exploring the urban and architectural legacy of the Games, the success stories, the white elephants, and the administrative agendas, the following discusses what the Olympics leave behind in the hosting cities.

Time Out, an online platform for urban culture that looks for the most vibrant locations around the globe, has recently ranked the 30 coolest streets in the world. The website, which usually focuses on cities as a whole, having already ranked the coolest neighborhoods, is now taking a more local approach due to the Covid-19 pandemic.

Álvaro Siza's latest project in Portugal is a 16-meter high watchtower built with a lightweight steel structure featuring photovoltaic panels on the roof. This project is very different from most of Siza's works, both in terms of scale and materials. The watchtower is located in Serra das Talhadas, in the municipality of Proença-a-Nova, and is part of a larger project comprising several structures dedicated to ecotourism in the area, including the still unbuilt Miradouro do Zebro.

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When designing homes, architecture is constantly evolving and adapting to environmental conditions. Each climate has specific needs and requires different solutions in terms of comfort. Hot and humid environments require a very different design from cold and dry environments. Natural ventilation, for example, is very important in projects located in warm climates.

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Videos

Automation is everywhere around us - our homes, furniture, offices, cars, and even our clothing; we have become so accustomed to being surrounded by automated systems that we have forgotten what life was like without them. And while automation has noticeably improved the quality of interior spaces with solutions like purified air and temperature control, nothing compares to the natural cool breeze of mother nature.

But just like everything else in architecture, there is no one size fits all; what works in Tanzania cannot work in Switzerland or Colombia. This is due to several reasons, such as the difference in wind direction, average temperature, spatial needs, and environmental restrictions (or lack thereof). In this article, we take a look at natural ventilation in all its forms, and how architects have employed this passive solution in different contexts. 

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The little-known and remote area of North Caucasus is an intricate assemblage of territories, ethnicities, languages, religions, and, consequently, architectures, from Tsarist-era buildings to mosques, traditional bas-reliefs, and Soviet Modernism. The setting of controversial events and a heterogeneous cultural environment, in many ways, North Caucasus is a borderland between Europe and Asia, the former USSR and the Middle East, Christianity and Islam. Photographs by Gianluca Pardelli, Thomas Paul Mayer and Nikolai Vassiliev provide an introduction to the architectural landscape of the region.

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