Abstract: In recent years, the frequency of extreme weather events, including stormwater and flooding, has surged, significantly impacting various aspects of human life, infrastructure, and cities. Italy, renowned for its rich cultural heritage, boasts numerous historical sites, many of which are architecturally unique and, due to their locations and conditions, may be particularly susceptible to the effects of extreme weather events. Among Italy’s cultural heritage, the Valentino Castle stands as a significant historical monument. Situated along the banks of the Po River and intricately connected to the river’s underground water system, this iconic castle faces an escalating risk of flooding considering the increasing frequency of extreme weather events.