Editorial to the JWCP volume 10 (2), co-edited by J.Joseph-Lester This issue aims to understand the conditions of our urban human experience as constructed, lived, built and shared between two different megacities: London and Los Angeles. The contributors that we have brought together are associated mainly with the Royal College of Art, London and California Institute of the Arts, Los Angeles. Together we propose a complex analysis of the processes and mediations of urban space, interpersonal and social communicative technologies, and modes of power, focusing on how power is planned and imagined as an architectural construct that determines the use and function of urban social space.