Our perspectives of action on the environment ultimately lead us to the notion of unitary urbanism. Unitary urbanism is defined first of all as the use of all arts and techniques as means contributing to the composition of a unified milieu. Such an interrelated ensemble must be envisaged as incomparably more far-reaching than the old domination of architecture over the traditional arts, or than the present sporadic application to anarchic urbanism of specialized technology or of scientific investigations such as ecology. Unitary urbanism must, for example, determine the acoustic environment as well as the distribution of different varieties of food and drink. It must include both the creation of new forms and the détournement of previous forms of architecture, urbanism, poetry and cinema. Integral art, which has been talked about so much, can be realized only at the level of urbanism. But it can no longer correspond to any of the traditional aesthetic categories. In each of its experimental cities unitary urbanism will act by way of a certain number of force fields, which we can temporarily designate by the classic term “district.” Each district will tend toward a specific harmony distinct from neighboring harmonies; or else will play on a maximum breaking up of internal harmony. Secondly, unitary urbanism is dynamic, in that it is directly related to styles of behavior. The most elementary unit of unitary urbanism is not the house, but the architectural complex, which combines all the factors conditioning an ambience, or a series of clashing ambiences, on the scale of the constructed situation. Spatial development must take into account the emotional effects that the experimental city is intended to produce. One of our comrades has advanced a theory of “states-of-mind” districts, according to which each district of a city would be designed to provoke a specific basic sentiment to which people would knowingly expose themselves. It seems that such a project draws appropriate conclusions from the current tendency to depreciate randomly encountered primary sentiments, and that its realization could contribute to accelerating that depreciation. The comrades who call for a new, free architecture must understand that this new architecture will primarily be based not on free, poetic lines and forms — in the sense that today’s “lyrical abstract” painting uses those terms — but rather on the atmospheric effects of rooms, hallways, streets — atmospheres linked to the activities they contain. Architecture must advance by taking emotionally moving situations, rather than emotionally moving forms, as the material it works with. And the experiments conducted with this material will lead to new, as yet unknown forms. Debord, Report on the Creation of Situations, theanarchistlibrary.org, p.12

They argued that a city that reflects desire would undo the crippling effects that a highly organized urban terrain has on the human mind. The practice of living beyond a highly rational organized environment would be realized in experimental cities designed according to the principles of what was termed unitary urbanism. The main unit of a city so designed was the architectural complex. These complexes are an ensemble of constructed situations producing certain ambiances. Unitary urbanism does not conform to the logic of capitalism; thus its space is highly political because the unitary city stresses play, unpredictability, and diversion in its design. https://www.britannica.com/topic/Situationist-International

The SI's minimum program is the development of complete environments, which must extend to a unitary urbanism, and research into new modes of behavior in relation to these environments. Unitary urbanism is defined as the complex, ongoing activity that consciously recreates man's environment according to the most advanced conceptions in every domain. The solution to problems of housing, traffic, and recreation can only be envisaged in relation to social, psychological and artistic perspectives that are combined in one synthetic hypothesis at the level of daily life. Unitary urbanism, independently of all aesthetic considerations, is the fruit of a new type of collective creativity; the development of this spirit of creation is the prior condition of unitary urbanism. All means are usable, on condition that they serve in a unitary action. The coordination of artistic and scientific means must lead to their total fusion. Artistic and scientific research must attain total freedom. The construction of a situation is the edification of a transient micro-ambiance and of the play of events for a unique moment in the lives of several persons. Within unitary urbanism, it is inseparable from the construction of a general, relatively more lasting ambiance. A constructed situation is a means for unitary urbanism, just as unitary urbanism is the indispensable basis for the construction of situations as at once play and as seriousness in a freer society Constant & Debord, The Amsterdam Declaration, Internationale Situationniste #2, https://libcom.org/article/amsterdam-declaration-constant-guy-debord, as edited by https://libcom.org/article/corrections-adopting-eleven-points-amsterdam

1. A mistake made by all the city planners is to consider the private automobile (and its by-products, such as the motorcycle) as essentially a means of transportation. In reality, it is the most notable material symbol of the notion of happiness that developed capitalism tends to spread throughout the society. The automobile is at the center of this general propaganda, both as supreme good of an alienated life and as essential product of the capitalist market: It is generally being said this year that American economic prosperity is soon going to depend on the success of the slogan "Two cars per family." 2. Commuting time, as Le Corbusier rightly noted, is a surplus labor which correspondingly reduces the amount of "free" time. 3. We must replace travel as an adjunct to work with travel as a pleasure. 4. To want to redesign architecture to accord with the needs of the present massive and parasitical existence of private automobiles reflects the most unrealistic misapprehension of where the real problems lie. Instead, architecture must be transformed to accord with the whole development of the society, criticizing all the transitory values linked to obsolete forms of social relationships (in the first rank of which is the family). 5. Even if, during a transitional period, we temporarily accept a rigid division between work zones and residence zones, we must at least envisage a third sphere: that of life itself (the sphere of freedom and leisure -- the essence of life). Unitary urbanism acknowledges no boundaries; it aims to form an integrated human milieu in which separations such as work/leisure or public/private will finally be dissolved. But before this is possible, the minimum action of unitary urbanism is to extend the terrain of play to all desirable constructions. This terrain will be at the level of complexity of an old city. 6. It is not a matter of opposing the automobile as an evil in itself. It is its extreme concentration in the cities that has led to the negation of its function. Urbanism should certainly not ignore the automobile, but even less should it accept it as its central theme. It should reckon on gradually phasing it out. In any case, we can envision the banning of auto traffic from the central areas of certain new complexes, as well as from a few old cities. […] 9. Revolutionary urbanists will not limit their concern to the circulation of things, or to the circulation of human beings trapped in a world of things. They will try to break these topological chains, paving the way with their experiments for a human journey through authentic life. Debord, Situationist Theses on Traffic, Internationale Situationniste #3, https://libcom.org/article/situationist-theses-traffic-guy-debord