The article examines the impact of the virtual public sphere on how urban spaces are experienced and conceived in our data-driven society. It places particular emphasis on urban scale digital twins, which are virtual replicas of cities that are used to simulate environments and develop scenarios in response to policy problems. The article also investigates the shift from the technical to the socio-technical perspective within the field of smart cities. Despite the aspirations of urban scale digital twins to enhance the participation of citizens in the decision-making processes relayed to urban planning strategies, the fact that they are based on a limited set of variables and processes makes them problematic. The article aims to shed light on the tension between the real and the ideal at stake during this process of abstracting sets of variables and processes in the case of urban scale digital twins.

The article presents the reasons for which the issue of providing housing to low-income citizens has been a real challenge in Addis Ababa during the recent years and will continue to be, given that its population is growing extremely fast. It examines the tensions between the universal aspirations and the local realities in the case of some of Ethiopia’s most ambitious mass pro-poor housing schemes, such as the “Addis Ababa Grand Housing Program” (AAGHP), which was launched in 2004 and was integrated in the “Integrated Housing Development Program” (IHDP) in 2006. The article argues that the quotidian practices of communities and their socio-economic and cultural characteristics are related to the spatial attributes of co-housing practices. Drawing upon the idea that there is a mutual correspondence between social and spatial structures, it places particular emphasis on the analysis of the IHDP and aims to show that to shape strategies that take into account the social and cultural aspects of daily life of the poor citizens of Addis Ababa, it is pivotal to invite them to take part in the decision-making processes regarding their resettlement. Departing from the fact that a large percentage of the housing supply in Addis Ababa consists of informal unplanned housing, the article also compares the commoning practices in kebele houses and condominium units. The former refers to the legal informal housing units owned by the government and rented to their dwellers, whereas the latter concerns the housing blocks built in the framework of the IHDP for the resettlement of the kebele dwellers. The article analyzes these processes of resettlement, shedding light of the fact that kebele houses were located at the inner city, whereas the condominiums are located in the suburbs. Despite the fact that the living conditions in the condominium units are of a much higher quality than those in the kebele houses, their design underestimated or even neglected the role of the commoning practices. The article highlights the advantages of commoning practices in architecture and urban planning, and how the implementation of participation-oriented solutions can respond to the difficulties of providing housing. It argues that understanding the significance of the endeavors that take into account the opinions of dwellers during the phase of decision-making goes hand in hand with considering commoning practices as a source of architecture and urban planning frameworks for low-cost housing in this specific context. The key argument of the article is that urban planning and architecture solutions in Addis Ababa should be based on the principles of the so-called “negotiated planning” approach, which implies a close analysis of the interconnections between planning, infrastructure, and land.

This essay examines the way in which Bernard Tschumi understood and discussed the concept of space during the 1970s, interpreting it in conjunction with his relationship with the so-called 'London Conceptualists' whose concern was to embrace spatial experience. Tschumi's exchanges with the conceptual and performance art scene in London are pivotal for understanding his conception of space at the time. Special attention is hence paid to a number of exhibitions that epitomized the cross-fertilisation between architecture and art, such as 'A Space: A Thousand Words' held at the Royal College of Art in 1975 and co-curated by Bernard Tschumi and RoseLee Goldberg. The importance of this exhibition for comprehending the role of space in Tschumi's thought lies in the fact that it aimed '[t]o reveal a change in attitudes towards the theories and the language of space', and thus to reinforce the contact of architecture with the very reality of spatial experience. The essay examines the evolution of Tschumi's concerns about spatial praxis, addressing core issues of his 1970s pedagogical and design practice. Particular emphasis is placed upon his teaching strategies at the Architectural Association (AA) in London, and on an ensemble of projects on which he worked during his first forays in the United States of America such as The Manhattan Transcripts, The Screenplays and The 20 th Century Follies. The main objective of this essay us to render explicit how Tschumi's conception of urban experience as simultaneously space and event is closely related to his intention to challenge the cause-effect relationships dominating Modernist views of the city. Of great significance for his understanding of urban conditions is Tschumi's claim that in architecture the materialisation of concepts coincides with their simultaneous visual and social expression.

The article scrutinizes the impact of the 1968 student protests on architectural education and epistemology within the Italian and American context, the advocacy planning movement and the relationship of architecture and urban planning with the socio-political climate around 1968. It aims to demonstrate how the concepts of urban renewal and ‘nuova dimensione’ were progressively abandoned in the USA and Italy respectively. It presents how the critique of these concepts was related to the conviction that they were incompatible with socially effective architecture and urban design approaches. The article sheds light on the complexity of the reorientations that took place in both contexts, taking into consideration the impact of student protests, and the 1968 Civil Rights Action the architects and urban planners’s task on the curricula of schools of architecture. It also investigates certain counter-events and counter-publications in the USA and Italy, shedding light on how they reinvented the relationship between architecture and democracy. It reveals the tensions between enhancing equality in planning process and local bureaucracy in the case of advocacy planning strategies.

The article investigates how the use of extended reality technologies and interactive digital interfaces have affected the design of exhibition spaces. Its main objective is to shed light on how these technologies have influenced the ways in which immersive art installations are conceived and experienced. Particular emphasis is placed on the impact of interactive technologies on how visitors experience exhibition spaces. The article examines an ensemble of immersive art cases, paying special attention to the distinction between immersion and interactivity. Two concepts that are pivotal for understanding the transformations concerning the subjectivity of the exhibition visitor those of the “imagineer” and the “ultra-technologist”, which are analysed in the article. The intention is to render explicit how extended reality technologies have contributed to the design of immersive experiences, significantly influencing the interrelations between the technical, aesthetic and institutional aspects concerning exhibition design and the methods of dissemination of art.

The article examines the principles of Giancarlo De Carlo’s design approach. It pays special attention to his critique of the modernist functionalist logic, which was based on a simplified understanding of users. De Carlo′s participatory design approach was related to his intention to replace of the linear design process characterising the modernist approaches with a non-hierarchical model. Such a non-hierarchical model was applied to the design of the Nuovo Villaggio Matteotti in Terni among other projects. A characteristic of the design approach applied in the case of the Nuovo Villaggio Matteotti is the attention paid to the role of inhabitants during the different phases of the design process. The article explores how De Carlo’s “participatory design” criticised the functionalist approaches of pre-war modernist architects. It analyses De Carlo’s theory and describes how it was made manifest in his architectural practice—particularly in the design for the Nuovo Villaggio Matteotti and the master plan for Urbino—in his teaching and exhibition activities, and in the manner his buildings were photographs and represented through drawings and sketches. The work of Giancarlo De Carlo and, especially, his design methods in the case of the Nuovo Villaggio Matteotti can help us reveal the myths of participatory design approaches within the framework of their endeavour to replace the representation of designers by a representation of users. The article relates the potentials and limits of De Carlo’s participatory design approach to more contemporary concepts such as “negotiated planning”, “co-production”, and “crossbenching”. The article also intends to explore whether there is consistency between De Carlo’s theory of participation and its application.