Drimnagh Castle is the sole remaining moated castle in Ireland, a uniquely preserved Norman fortification in South Dublin with origins tracing to 1215 when the de Berneval family received lands from King John. This restored medieval stronghold sits surrounded by protective moats and features original castle structures alongside gardens, offering visitors both guided and self-guided tours. The site welcomes school groups and serves as a venue for events, presentations, and film production, making it a significant heritage attraction that bridges medieval history with contemporary cultural use.