SISI tests new pathways in urban design through the connection between concrete and digital space. The search for alternative approaches of co-existence and the reclaiming of cities will begin at the speculative locations of the digital and should add new perspectives to public space. The institute headquarters is the starting point for staged city strolls during which the commons is conquered. Space bombs provide participants with new approaches to the urban that will grow into networks after the festival ends and should have a lasting effect on urban space. The project website will be the location where an interactive archive that enables active participation in the collective process is created. SISI will become an urban laboratory, provide potential instructions for how to do it together, and encourage discussion about the city’s future as a common space for community. Information about urban strolls and other events can be found at www.sisi-project.org.