OpenHistoricalMap
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No community is too small, no story too obscure to add to this map.
Everyone has something to contribute, including you!
Contribute
To contribute to OpenHistoricalMap, go to the main map, zoom in to a place of interest, and click the “Edit” button. If you are familiar with editing OpenStreetMap, the OpenHistoricalMap editing experience is very similar. See the tagging guidelines for information on a few changes we’ve made to accommodate the time dimension.
We also maintain several software projects to facilitate map contributions and data reuse. Please report any issues and send us your ideas on GitHub or our forum.
Then and now
From OpenHistoricalMap's community projects:
Left: The Great Lakes rail network in 1920. Right: The same location today.
On this day
Selected establishments and disestablishments on May 19:
- 1890
- The Blenheim and Woodstock branch line opens between Kidlington and Woodstock, Oxfordshire.
Statistics
- 1.8M
dated elements - 449k
buildings - 293k
railroad miles - 130
average age - 1935
average year - 1,670
contributors
- Source: Overpass API, Overpass API, Planet
- May 2, 2025
News
- April 27, 2025
- OSM Building Viewer adds support for rendering an OHM building in 3D.
- April 17, 2025
- OpenRailwayMap has added a time slider and replaced OpenStreetMap demolished railways with OpenHistoricalMap data.
- April 15, 2025
- Follow our new Bluesky account.
- April 10, 2025
- The Nominatim API has moved to a new subdomain for consistency with OpenStreetMap.
- February 12, 2025
- QLever examples have been updated to reflect an improved data model for members of relations and ways and more metadata.
Events
Policies and guidelines
Tagging
Copyright
Code of conduct
Good practice (draft)
Land acknowledgment (draft)
Resources
Connect
Forum & Chat
GitHub
OSMUS Slack#openhistoricalmap
Discord#openhistoricalmap
Mastodon
Bluesky
Facebook
Mailing list