The growth of urbanisation in areas exposed to multiple geological hazards, coupled with the rapid increase in extreme climate-related events, makes novel approaches to the geophysical monitoring of urban areas necessary. This scenario will present unprecedented challenges to the infrastructure and lifeline systems that are already overstressed and support urban centres. Programmes that promote the sustainability and resilience of cities and lifeline infrastructures require the development of methodologies for non-destructive or minimally invasive geophysical exploration and monitoring of surface and the subsurface. This session will present and discuss recent technological and methodological advances in geophysics, including multi-sensor, multi-resolution, and multi-scale approaches to the geophysical investigation of urban subsurface and strategic infrastructures. The focus will be on novel and effective geophysical methods, innovative sensors (e.g. fibre optics and MEMS) for dense and distributed network arrays, and AI-based algorithms and machine learning methods for processing and analysing geophysical data. Furthermore, we welcome and encourage presentations on case studies concerning the monitoring of urban areas and infrastructure, the developing of innovative systems for sharing and visualising digital data, and the use of digital twins of the urban subsurface. The session will also provide an opportunity for applied geophysicists, geologists, and engineers to share their expertise and discuss issues. Finally, the session will promote the activities of early career scientists in addressing open challenges in applied geophysics in programmes for the sustainability and resilience of tomorrow's cities.