About ARGOS
ARGOS is the map that argues back. It is an open-source geospatial digital twin of Kefalonia, Greece, built entirely on free data and open code.
Kefalonia is the largest of the Ionian Islands. ARGOS currently maps 12,217 roads and 46,934 buildings across a topography that ranges from sea level to 1,628 meters at Mount Ainos. The island also has a history of wildfires, flash floods, and coastal hazards that affect both residents and visitors.
ARGOS was built to give civil protection, researchers, and citizens a single picture of the island's risks and assets. It is a volunteer project by someone who grew up on the island and knows that the data to protect it already exists. It just needed to be assembled.
The project runs on open data: OpenStreetMap for roads, places, and the original building layer; Microsoft Building Footprints for additional machine-detected buildings; Copernicus Sentinel-2 for satellite imagery and vegetation indices; the Copernicus DEM for elevation and slope; EFFIS for historical fire records; and EMODnet for bathymetry. The stack is PostGIS, GDAL, FastAPI, and MapLibre. Everything is documented. Everything is reproducible.
The builder
Panagis Tzivras is a data and geospatial systems engineer from Kefalonia. He trained in Marine Sciences before moving into geospatial systems. He built ARGOS in public, publishing the code, the methodology, and every mistake along the way.
Contact: hello@argos-geo.org