The article highlights the Jesuits' 120-year history of seismic observation at Mirador Hill in Baguio, Philippines.It details their role in monitoring earthquakes, including the 1990 Luzon earthquake's impact on their equipment.Modern seismic sensors now replace the old paper-drum recorders, showcasing technological advancements.The site's significance as a scientific and cultural landmark is emphasized, with recognition as an Important Cultural Property.The piece underscores the Jesuits' dedication to understanding geological forces and their legacy in both science and heritage preservation.