General guide map of the Helsinki Metropolitan Area

The general map of the Helsinki Metropolitan Area is a map of the Helsinki metropolitan area with a generalised documentation technique, produced to assist in positioning and guidance. The maps can also be used as index maps in various map services and as background maps for various map presentations.

The general map is produced from the guide map data maintained by the city survey services of the cities of the Helsinki Metropolitan Area by strongly generalising and reducing the details. The general maps are produced in both coloured and grayscale versions. The pixel resolutions are 8 metres, 16 metres and 32 metres. The data is merged and published by the City Survey Services of the City of Helsinki Urban Environment Division. The dataset is available both through the API and as a TIF-format series.

The general maps of the Helsinki Metropolitan Area cover the entire area of the Helsinki Metropolitan Area, including the sea area. An open data publication is carried out once a year for the file series.

The data collection for the dataset is based on open data resources: guide maps of Espoo and Vantaa as well as the data of the National Land Survey of Finland.

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

Layers:

• Yleiskartta_PKS_8m
• Yleiskartta_PKS_8m_harmaa
• Yleiskartta_PKS_8m_harmaa_pohja
• Yleiskartta_PKS_16m
• Yleiskartta_PKS_16m_harmaa
• Yleiskartta_PKS_16m_harmaa_pohja
• Yleiskartta_PKS_32m
• Yleiskartta_PKS_32m_harmaa
• Yleiskartta_PKS_32m_indeksi