In increasingly denser urban environments, there is a new-found interest in underused spaces as opportunities for further development. Representing up to 25% of cities' land area, rooftops are among the most exciting spatial resources. From sustainable infrastructure and urban farming to social spaces and cultural venues, the article looks into the potential of creating a multi-layered city through the activation of urban rooftops.

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The International Placemaking Week, presented by Project for Public Spaces (PPS) is an inspiring and engaging event designed as a global gathering of placemakers from different sectors to discuss thoughts and share strategies in order to push forward the concept of placemaking in the host city and on an international level. Previous editions took place in Vancouver in 2016, Amsterdam in 2017, and Chattanooga, Tennessee in 2019.

PPS, the nonprofit organization behind Placemaking Week, helps people create and sustain public spaces that build strong communities. In 1999, they elaborated “How to turn a place around”, a book that defined the placemaking movement, creating a guideline of 11 principles to follow in order to create vibrant community spaces.

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An extensive urban regeneration project is slated to take place in the town of Stockton in the United Kingdom. A 37-million-pound project, the proposal - drawn up by Ryder Architecture and backed by the Stockton Borough Council - will demolish half the high street in Stockton’s town centre and replace it with a riverside park.

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Urban acupuncture is a design tactic promoting urban regeneration at a local level, supporting the idea that interventions in public space don’t need to be ample and expensive to have a transformative impact. An alternative to conventional development processes, urban acupuncture represents an adaptable framework for urban renewal, where highly focused and targeted initiatives help regenerate neglected spaces, incrementally deploy urban strategies, or consolidate the social infrastructure of a city. 

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Since the 1990s, copious amounts of cities in China have been undergoing urban renewal. Prompted by this state-facilitated urban redevelopment, skyscrapers are being built rapidly in major cities to attract affluent middle-classes, resulting in countless relocation and displacement of the working-class population. Such process is known as “gentrification”.

As cities and neighborhoods are being gentrified thoroughly to meet middle-class taste and boost economic growth, urban land resources are being treated in ways to increase business potential, leaving little room for the development of urban street life. Among rows of concrete and steel constructions, nowadays, urbanites are struggling to find a place to sit, rest, and play during leisure time. Analyzing five architectural practices creating livable urban public spaces, this article discusses the challenges and opportunities of urban revitalization in China under the phenomenon of gentrification.

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When we talk about roofs or fifth facades it is already a classic to think about green roofs. In reality, there is a wide range of uses and possibilities that materialize in different ways depending on the specific technical needs of each roof as well as the spatial and climatic possibilities of each location. The roofs can also be favourable spaces to develop structures, extensions, recreational areas and interactive spaces. It could even play a key role in the integration of a building with the landscape.

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Normally the efforts of the construction industry are aimed to design permanent and durable spaces. However, on some occasions creating temporary spaces can be of great help, not only when providing fast assembly infrastructure after the effects of a natural disaster, but also when activating residual or abandoned spaces in our cities. To exemplify the potential of these interventions, we present thirteen successful temporary public spaces.

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