The National Land Survey of Iceland has launched a transformative project to digitise and release its extensive historical aerial imagery archive, turning decades of film-based aerial photography into open data. Dating back to the 1930s, this archive captures Iceland’s landscape evolution since becoming an independent nation. Each film roll was scanned into a digital format, then georeferenced using satellite imagery to create seamless mosaicked map layers. These map layers, enriched with flight metadata for better searchability, are freely accessible through a bilingual web viewer and available as Web Map Service (WMS) layers. This open data initiative not only preserves Iceland’s visual history but also enables its wide reuse for research, education, climate studies, and public exploration.