As cities continue to develop, we are seeing ever more well-planned, thoroughly executed, and tightly regulated approaches to shaping urban centres and their surrounding spaces—for better and for worse. As codes, restrictions, and guidelines improve and tighten, urban environments become safer, more balanced, and less prone to surprise. Yet the flip side is that highly managed districts can drift toward over-order and sanitisation, shedding the messy, accretive character that once produced alleyways, residual spaces, and unexpected sequences of movement—conditions often born from ongoing community improvisation in the grey zones of regulation.
In response, a growing number of initiatives around the world are proposing short-term urban installations that test alternate futures for the city. These works aim to provoke dialogue between what the city is and what it could offer its communities through thoughtful, context-specific spatial practices. One notable example is Concéntrico, the international festival in Logroño, Spain, conceived as an urban innovation laboratory. Marking its tenth edition, the festival is about to publish Concéntrico: Urban Innovation Laboratory, a book that surveys a decade of urban design and collective transformation shaped through successive editions of the festival. Its launch is paired with an international tour designed to share a decade of insights on collective transformation and design.
