The physical and conceptual result of the great changes which affect our society is a city in
‘stand-by’. Even if the XXI century is considered to be an ‘urban century’, many Western cities
are shrinking and lack the resources which are necessary to complete planned masterplans. By
postponing the transformation of the city to an indefinite future, the number of vacant spaces is
increasing. This situation reduces the city into an amorphous landscape that also reflects the
social problems concerning a wide number of citizens.
In this uncertain scenario, the temporary project becomes an effective tool to open the urban
space toward its use as well as to avoid a further degradation of the landscape. Through interim
practices the 'forced breaks', to which the city is constrained, can be transformed into moments of experimentation, becoming an opportunity to reflect on the means and methods of the project
itself.
This work proposes a reflection on the concept of time based on the idea of real duration
introduced by Bergson. 'Activating' usually unused sequences of time, the interim project works
as a dynamic means of urban regeneration based on the empowerment of local communities.
Finally, the aim of this paper is to summarize the features that make the intermediate project
able to trigger a transformation of the city based on a new way to participate, attempting to
strengthen the resilient capacity of the people involved. For this purpose several European
projects are collected and classified into four dimensional categories, showing the adaptability
of the temporary project at all scales and levels of planning.