OpenHistoricalMap

OpenHistoricalMap goes beyond the present, mapping places throughout the world… throughout the ages.
No community is too small, no story too obscure to add to this map.
Everyone has something to contribute, including you!

Go to the map • Learn more…

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: Seneca Village, a small community of former slaves on the West Side of Manhattan, as of 1844. Right: The same location today.

On this day

Selected establishments and disestablishments on June 28:

1834: Michigan Territory gains unorganized federal territory west of the Mississippi River, including present-day Iowa and parts of Minnesota and North and South Dakota.
1919: Under the Treaty of Versailles, Kamerun is divided into British Cameroon and French Cameroon, while German South West Africa came under South African administration.
1940: The Bukovina, Bessarabia, and Hertsa regions of Romania are occupied by the Soviet Union.
1957: The Will Rogers Turnpike opens for traffic in Oklahoma.
1997: Line 1 of the Guangzhou Metro opens in Guangzhou.
2003: Line 2 of the Guangzhou Metro opens in Guangzhou.

Statistics

1.9M
dated elements
455k
buildings
315k
railroad miles
129
average age
1935
average year
1,701
contributors

Source: Overpass API, Overpass API, Planet
June 2, 2025

Historical statistics

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.