Open APIs Löydä kaikki pääkaupunkiseudun avoimet rajapinnat täältä! Submit Last created Popular Relevance Names in ascending order Names in descending order Last modified Go 3 datasets found Materials of Helsinki City Archives 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... JSON Historical guide maps of the City of Helsinki 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... TIFF WMS Map of Helsinki and its areas from 1909 Map of the City of Helsinki and its areas from 1909 prepared by the City of Helsinki construction office. The map covers the entire urban area at the time and the city-owned... TIFF WMS