Tactical urbanism includes low-cost, temporary changes to the built environment, usually in cities, intended to improve local neighbourhoods and city gathering places. Tactical urbanism is also commonly referred to as guerrilla urbanism, pop-up urbanism, city repair, or D.I.Y. urbanism. Terminology The term was popularized around 2010 to refer to a range of existing techniques. The Street Plans Collaborative defines "tactical urbanism" as an approach to urban change that features the following five characteristics: A deliberate, phased approach to instigating change; The offering of local solutions for local planning challenges; Short-term commitment and realistic expectations; Low-risks, with a possibly high reward; and The development of social capital between citizens and the building of organizational capacity between public-private institutions, non-profits, and their constituents.While the 1984 English translation of The Practice of Everyday Life by Frenchman Michel de Certeau used the term tactical urbanism, this was in reference to events occurring in...