There is a fragmentation in the discussion regarding sustainable urban development in the architectural field today. This has led to the creation of several envisions that seek to achieve sustainability using different approaches. Therefore, the purpose of this thesis is to map different envisions in the architectural field with a focal point on three specific; spatial agency, ecological urbanism and hedonistic sustainability.  The methods used in this thesis are a document study and a literature study with the aim to compare the swedish policies regarding architecture and urban development against the envisions that exist in the architectural field today. Status quo, reform and transformation are the three approaches used as the main theory to analyze the gathered empirics. We have also introduced practical examples from the envisions to give a more nuanced picture of the field and how visions and ideas are being realized. These examples are 2012Architecten in Rotterdam, The Netherlands, HafenCity in Hamburg, Germany and finally Copenhill in Copenhagen, Denmark.  The structure of the thesis is of an analyzed character to help the reader follow the reasonings and notions presented throughout the study. The conclusion shows that there are great difficulties in achieving transformation within the field today, especially regarding the practitioning and realization of visions and ideas since most of the projects are being realized with an underlying driving force in the economic aspect and the urge for economic growth. The study also shows that the current policies in Sweden do not make room for transformation since they are based on the social structures of today. / Inom arkitekturverksamheten idag finns det en splittring i definitionen kring hållbart stadsbyggande vilket skapat flertalet föreställningar som på olika sätt strävar mot hållbarhet. Uppsatsen syfte är därmed att kartlägga olika föreställningar om hållbart stadsbyggande och arkitekturpraktik där fokus har lagts vid tre föreställningar; spatial agency, ecological urbanism och hedonistic sustainability.  Arbetet är utformat efter en dokumentstudie och en litteraturstudie för att kunna jämföra de svenska styrdokumenten och den rådande arkitekturpolitik med de aktuella föreställningar som finns inom arkitekturverksamheten. De tre förhållningssätten status quo, reform och transformation utgör uppsatsen underliggande teori och den insamlade empirin analyseras utefter dessa. Även praktiska exempel från de utvalda föreställningarna tas upp för att ge en nyanserad bild av hur visioner och idéer förverkligas i samhället idag. De praktiska exemplen utgörs av 2012Architecten, Rotterdam, Nederländerna, HafenCity, Hamburg, Tyskland och slutligen Copenhill, Köpenhamn, Danmark.  Uppsatsen byggs upp efter en analyserande struktur för att bjuda in läsaren till att följa de resonemang och begrepp som presenteras. Uppsatsens slutsats visar på svårigheter att uppnå transformation inom stadsbyggnad och arkitektur idag. Detta då praktiken inte speglar forskning och visioner utan samtliga projekt har en underliggande ekonomisk drivkraft. Studien visar även på hur den rådande arkitekturpolitiken inte ger utrymme för transformation inom stadsbyggnad, utan i stället bygger på rådande samhällsstrukturer.

Sugere-se a hipótese de uma Cidade Instantânea identificada no cotidiano em situações condicionadas por tecnologias de comunicação e informação, e especialmente a computação ubíqua, também conhecida como computação pervasiva ou computação ambiente. A investigação aponta para o entendimento de uma Cidade Instantânea que emerge em coletivos sem escala, sem localização e com fronteiras e limites extremamente frágeis, fluidos e temporários. A Cidade Instantânea se infiltra em todas as formas de cidades existentes sem anulá-las; substituí-las. A Cidade Instantânea não tem um objetivo traçado, ela é pura subjetividade que ganha força e presença nas multidões de indivíduos conectados. / We suggest the hypothesis of an Instant City identified in everyday situations conditioned by information and communication technologies, especially the ubiquitous computing, also known as pervasive computing or ambient computing. The research points to the understanding of an Instant City that emerges in collectives without a precise scale or location, with extremely fragile, fluid and temporary boundaries and limits. The Instant City joins and infiltrate in all forms of existing cities without dismiss them; replace them. The Instant City is pure subjectivity that gains strength and presence in the crowds of connected individuals.

Sugere-se a hipótese de uma Cidade Instantânea identificada no cotidiano em situações condicionadas por tecnologias de comunicação e informação, e especialmente a computação ubíqua, também conhecida como computação pervasiva ou computação ambiente. A investigação aponta para o entendimento de uma Cidade Instantânea que emerge em coletivos sem escala, sem localização e com fronteiras e limites extremamente frágeis, fluidos e temporários. A Cidade Instantânea se infiltra em todas as formas de cidades existentes sem anulá-las; substituí-las. A Cidade Instantânea não tem um objetivo traçado, ela é pura subjetividade que ganha força e presença nas multidões de indivíduos conectados. / We suggest the hypothesis of an Instant City identified in everyday situations conditioned by information and communication technologies, especially the ubiquitous computing, also known as pervasive computing or ambient computing. The research points to the understanding of an Instant City that emerges in collectives without a precise scale or location, with extremely fragile, fluid and temporary boundaries and limits. The Instant City joins and infiltrate in all forms of existing cities without dismiss them; replace them. The Instant City is pure subjectivity that gains strength and presence in the crowds of connected individuals.