This report examines how to build resilience in city infrastructure systems. It analyzes four key infrastructure areas - energy, water, ICT, and transport - through three case studies. The case studies demonstrate how past catastrophic events have impacted infrastructure and how stakeholders responded. The report then provides recommendations for infrastructure owners and operators to move beyond risk management of individual assets and instead build resilience within and between infrastructure systems. This includes considering how infrastructure performance may change under stress or shock events. The goal is to help cities better manage risk and recover more quickly from future disasters.