Architecture and urban planning are less hostile to the descriptor "Utopian" than some of the other disciplines, traditions and sets of practice considered within this book (Coleman, 2005 and 2011 and Alison and Brayer, 2007). Architecture is visionary and profoundly creative: "Architects invent what is not there" (Coleman, 2005, 9). It shapes the spaces in which we experience life (MacLeod and Ward, 2002). And architects are often driven by critical views about the world around them (for example, Le Corbusier claimed that he lived in an "Age of Greed" (Fishman, 1982, 5)). These include (but are not restricted to) theories about the nature of urban life, the relationship between people and their environment and the origins and impact of social (in)equality and cross-cutting cleavages such as class, race and religion (see Tafuri, 1976). Some architects and planners identify with particular ideologies. Some do not, but Utopia exists as a living strand in architectural practice and thought. Each generation of architects, each school of architecture, and each faction within these groups contains strong ideas of what is wrong with current architecture (including but not limited) to building, use of materials, use of space, design and construction. And each generation (and school and faction) offers several (sometimes competing, sometimes conflicting) suggestions about how to improve things. Within and behind these debates among architects and between schools of architecture lie ideas about how the world should be, what is the nature of the good life and how can space be organized in such a way as to facilitate or enable this.