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. Previewing the data in the kartta.hel.fi...

The detailed plan map of Helsinki is a combined map of the legally valid detailed plans in the area of Helsinki. The dataset includes both detailed plans and underground detailed plans. The detailed plan map contains...