Dataset - Helsinki Region Infoshare

Historical detailed plan maps of the city of Helsinki

Old detailed plans of Helsinki. The detailed plan maps for years 1820, 1838 and 1878 can be downloaded as TIFF-files. The guidemaps for all years can be found through WMS API....
- TIFF
- WMS
Historical general plan maps of the city of Helsinki

Vanhoja yleiskaavakarttoja Helsingistä. Vuosien 1992, 1960, ja 1932 ja 1923 yleiskaavakartat ovat WMS-rajapintapalvelun kautta. Aineistojen esikatselu kartta.hel.fi -palvelussa:...
- WMS
Land usage permission system for public areas in the City of Helsinki

The City of Helsinki Urban Environment Division manages the city’s public areas and gives the necessary landowner’s consent for the land use of public areas (e.g. construction,...
- WMS
- WFS

You can also access this registry using the API (see API docs).