Avoindata.fi is Finland's open data and interoperability service, providing a central catalog of datasets from state agencies, municipalities, and other public bodies. Geospatial coverage includes administrative boundaries, addresses, and environmental data, with much of it under CC BY 4.0.
For authoritative national mapping — topographic data, elevation, and orthophotos — the catalog connects to the National Land Survey of Finland's open data, which delivers high-quality base layers for the country.
