OpenHistoricalMap

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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!



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: Rennes as of 1500. Right: The same location today.

On this day

Selected establishments and disestablishments on October 26:

1838
Honduras declares its independence from the Federal Republic of Central America.
1939
Nazi Germany annexes Zichenau (Ciechanów), Suwalki (Suwałki), and Memelland (Klaipėda) and establishes the General Government in occupied Poland.
1954
The New York State Thruway opens between Newburgh and Westmoreland.
1955
South Vietnam is proclaimed a republic.
1957
A statue of Vladimir Lenin is unveiled in Mykolaiv, Ukrainian SSR.
1969
At 2 o’clock in the morning, the Central Time Zone is extended to include all of Kansas except for Sherman, Wallace, Greeley, Hamilton, and Kearny counties, which remain in the Mountain Time Zone.
2000
Israel Railways opens Tel Aviv–University station in Tel Aviv.
2007
The southern section of the Kallang–Paya Lebar Expressway opens in Singapore.
2020
In Jacksonville, Florida, Hemming Park is renamed James Weldon Johnson Park to honor a civil rights activist instead of a Confederate veteran of the American Civil War.


Statistics
  • 2.1M
    dated elements
  • 514k
    buildings
  • 381k
    railroad miles
  • 123
    average age
  • 1939
    average year
  • 1,825
    contributors
News
August 11, 2025
Vespucci adds built-in support for editing OpenHistoricalMap.
April 27, 2025
OSM Building Viewer adds support for rendering an OHM building in 3D.


Events
November 14, 2025 – November 15, 2025
State of the Map Europe in Dundee, Scotland
November 12, 2025 – November 13, 2025
Unicode Technology Workshop in Mountain View, California


Policies and guidelines