Definition Surveying were recently tasked with helping preserve a Napier mural that was set to be partially covered by new windows. Our goal was to capture and retain the artwork in exact detail before construction began. Using a combination of photogrammetry and geospatial referencing with a total station, we created an accurate digital model of the mural. After the new windows were installed, we returned to survey their precise locations and used those measurements to crop an orthorectified im