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!


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 November 16:

557
Chen Baxian establishes the Chen dynasty.
1792
In Massachusetts, Ashby in Middlesex County gains territory from Ashburnham in Worcester County.
1846
In the Austrian Empire, Galicia and Lodomeria annexes the Free City of Cracow as Krakauer Kreis.
1895
British Bechuanaland joins the Cape Colony.
1901
Louis Henning opens Mount Hamilton Market in San Jose, California.
1907
Oklahoma Territory and Indian Territory are incorporated as the State of Oklahoma.
1916
The Risdon Zinc Works are founded near Hobart, Tasmania.
1940
The Bornholm Aerodrome opens near Rønne, Denmark.
1986
A section of the São Paulo Metro’s Line 3 (Red) opens in São Paulo.
2018
The American Cancer Society closes Musekamp Family Hope Lodge in Cincinnati after 14 years in operation due to underuse.
2022
In Wales, the Snowdonia National Park Authority begins referring to Snowdon by its Welsh name, Yr Wyddfa.


Statistics
  • 2.2M
    dated elements
  • 543k
    buildings
  • 396k
    railroad miles
  • 122
    average age
  • 1940
    average year
  • 1,865
    contributors
News
August 11, 2025
Vespucci adds built-in support for editing OpenHistoricalMap.


Events
November 19, 2025
Conference at the Geographic Information Systems and Remote Sensing Research Center and Laboratory at the Autonomous University of Chiriquí in David, Panama
November 27, 2025
Maptime Amsterdam in Amsterdam


Policies and guidelines
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