Datasets
The Sinetti archive information system operated by the City of Helsinki Archives provides collection data from archived documents of the City of Helsinki. The document collections mostly comprise permanently retained,...
Municipalities
JSON
NOTE (1/2026): Koulurekisteri (the school register) service has been moved to a new website at https://historia.hel.fi/fi/koulurekisteri. Therefore, the interface is no longer in use. Koulurekisteri...
Municipalities
JSON
You can also access this registry using the API (see API Documentation).