WMS API

From the dataset abstract

In the data, Helsinki is divided into five different area types, which are guided by Helsinki Design Manual. The area type is a general description of the use of the area. Additional information is available on the Helsinki Design Manual website: https://kaupunkitilaohje.hel.fi/en/

The data is available for download in several formats, including JSON, KML, CSV, Esri Shape, and XML. Available formats can always be found under OutputFormat in the GetCapabilities query for the service.

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

• Design Manual
• All map layers can be found on the website: https://kartta.hel.fi/ > Layers > Design Manual

Coordinate systems:

• Maintained in ETRS-GK25 (EPSG:3879), can be projected to other coordinate systems. See GetCapabilities query for other possible coordinate systems.

API addresses:

• WMS API: https://kartta.hel.fi/ws/geoserver/avoindata/wms
• WFS API: https://kartta.hel.fi/ws/geoserver/avoindata/wfs

Layers:

• Kaupunkitilaohjealueet

Attributes of the Kaupunkitilaohjealue layer:

• tunniste(int): Unique identifier of the feature
• luokka (string): Area classification (five main classes)
• datanomistaja (string): Data owner
• paivitetty_tietopalveluun (date): Information service record date (yyyy-mm-dd)
• geom (GeometryPropertyType): Geometry of the feature

Source: Helsingin kaupunkitilaohjealueet