As cities and nations grapple with unprecedented climate uncertainties, the integration of grey and green systems—supported by innovative financing, interdisciplinary rigour, and community trust—offers a pathway to infrastructure that not only withstands disruption but thrives within it. However, there are critical challenges, including the complexity of stakeholder coordination, extended investment horizons, and the difficulty of quantifying diverse benefits. These challenges highlight the necessity of cost-benefit frameworks to account for long-term ecological, social, and economic gains. Resilience is not a static endpoint but a dynamic process of learning, adaptation, and collective action. By embracing this ethos, stakeholders can forge infrastructure systems that are not only sustainable but regenerative, ensuring a legacy of resilience for generations to come.