Datasets
Historical guide maps of Helsinki from 1940, 1952, 1962 and 1999. The guide maps include the following Information: place names, streets, roads and railway connections, public buildings, residential areas, industrial...
Municipalities
TIFF
WMS
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).