This paper examines the increased prevalence of urban terror and its spatial implications. Urban terror concerns territory, space and logistics, and is characterised by low-intensity, ambiguously bounded warfare. It is defined as attacks intentionally directed against non-combatants and key installations located in high-density, continuously developed, diversified environments. The research traces the collective experience of London, Moscow and Istanbul with extended attention paid to Jerusalem. Four patterns of urban terror are identified and used to conduct the analysis. These consist of terrorist attempts to: decontrol urban territory, cause instability and demonstrate vulnerability; launch repetitive attacks on specific spaces in order to create conditions of chaos; achieve proximity and access to targets; and, finally, a response to terror by authorities based on surveillance, partition, closure and shrinkage of urban space. A final section consists of analysing terror's impact on the economy and future of cities.