OpenHistoricalMap

Copyright and License

OpenHistoricalMap is open data, licensed under the Open Data Commons Open Database License (ODbL).

You are free to copy, distribute, transmit and adapt our data, as long as you credit OpenHistoricalMap and its contributors. If you alter or build upon our data, you may distribute the result only under the same licence. The full legal code explains your rights and responsibilities.

The cartography in our map tiles, and our documentation, are licensed under the Creative Commons Attribution-ShareAlike 2.0 license (CC BY-SA).

How to credit OpenHistoricalMap

We require that you use the credit “© OpenHistoricalMap contributors”.

You must also make it clear that the data is available under the Open Database License, and if using our map tiles, that the cartography is licensed as CC BY-SA. You may do this by linking to this copyright page. Alternatively, and as a requirement if you are distributing OSM in a data form, you can name and link directly to the license(s). In media where links are not possible (e.g. printed works), we suggest you direct your readers to openstreetmap.org (perhaps by expanding 'OpenHistoricalMap' to this full address), to opendatacommons.org, and if relevant, to creativecommons.org.

For a browsable electronic map, the credit should appear in the corner of the map. For example:

Example of how to attribute OpenHistoricalMap on a webpage

Finding out more

Read more about using our data, and how to credit us, at the Legal FAQ.

Although OpenHistoricalMap is open data, we cannot provide a free-of-charge map API for third-party developers. See our API Usage Policy, Tile Usage Policy and Nominatim Usage Policy.

Our contributors

Our contributors are thousands of individuals. We also include openly-licensed data from national mapping agencies and other sources, among them:

  • Austria: Contains data from Stadt Wien (under CC BY), Land Vorarlberg and Land Tirol (under CC BY AT with amendments).
  • Canada: Contains data from GeoBase®, GeoGratis (© Department of Natural Resources Canada), CanVec (© Department of Natural Resources Canada), and StatCan (Geography Division, Statistics Canada).
  • Finland: Contains data from the National Land Survey of Finland's Topographic Database and other datasets, under the NLSFI License.
  • France: Contains data sourced from Direction Générale des Impôts.
  • Netherlands: Contains © AND data, 2007 (www.and.com)
  • New Zealand: Contains data sourced from Land Information New Zealand. Crown Copyright reserved.
  • South Africa: Contains data sourced from Chief Directorate: National Geo-Spatial Information, State copyright reserved.
  • United Kingdom: Contains Ordnance Survey data © Crown copyright and database right 2010-12.

For further details of these, and other sources that have been used to help improve OpenHistoricalMap, please see the Contributors page on the OpenHistoricalMap Wiki.

Inclusion of data in OpenHistoricalMap does not imply that the original data provider endorses OpenHistoricalMap, provides any warranty, or accepts any liability.

Copyright infringement

OSM contributors are reminded never to add data from any copyrighted sources (e.g. Google Maps or printed maps) without explicit permission from the copyright holders.

If you believe that copyrighted material has been inappropriately added to the OpenHistoricalMap database or this site, please refer to our takedown procedure or file directly at our on-line filing page.