urban:\GLITCH is a magazine accompanied by a research homepage. The title refers to the physical manifestation of an irregularity in the programming of urban space. The definition of an urban glitch presupposes the assumption of deliberate programming of an urban fabric and its spatial, environmental, and social impact. Urban glitches embody processes of a planning culture that have lost validity over time, have been compromised by parallel systems or contain inherent flaws in the programming code that appear to be random occurrences of different, unanticipated conditions.