At a time when architectural and urban studies are moving towards seeking to accept and understand informal neighbourhoods rather than ignoring or eradicating them, the need for experiments on the ground is becoming increasingly urgent. In recent years, a growing number of architects and spatial practitioners have begun to act on their commitment to the idea that these settlements are here to stay and require selective intervention. Critical Neighbourhoods – The Architecture of Contested Communities analyses recent studies and practical actions in three different continents (Africa, America and Asia). The volume is edited by Paulo Moreira, with contributions by Elisa Silva, Julia King, Matthew Barac and Ines Weizman, and a preface by AbdouMaliq Simone.