Open APIs Löydä kaikki pääkaupunkiseudun avoimet rajapinnat täältä! Submit Last Created Popular Relevance Name Ascending Name Descending Last Modified Go 2 datasets found Collections of Helsinki City Museum Helsinki City Museum has made more than 48,000 of its materials available under open licence through the Finna service, which contains material-specific descriptions. In Finna,... JPEG JSON Helmet-libraries’ catalog Data from the HelMet libraries’ catalogue in a machine-readable format. The data source contains the descriptions of approximately 680,000 books, records, sheet music... JSON