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…

Use

Go to the main map and navigate to a place and time of interest using the time slider. Share the map to spread the word about our project. Explore the many ways you can reuse OpenHistoricalMap in your own storytelling and software projects.

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. Please report any issues and send us your ideas on GitHub or our forum.

Then and now

From OpenHistoricalMap's community projects:

Left: The city of Königsberg as of 1920. Right: The same location today.

On this day

Selected establishments and disestablishments on March 11:

1778: Bioko and adjacent islets are ceded by the Portuguese Empire to the Spanish Empire in the Treaty of El Pardo.
1990: Lithuania becomes the first Soviet state to declare independence.
2011: A Prada store opens in Vancouver, British Columbia.
2016: Dingley Bypass is completed in Melbourne, Victoria.

Statistics

2.4M
dated elements
593k
buildings
436k
railroad miles
126
average age
1938
average year
2,013
contributors

Source: Overpass API, Overpass API, Planet
March 1, 2026

Historical statistics

News

February 20, 2026: JOSM’s Changeset Viewer plugin adds support for OHMCha.
February 17, 2026: Welcome to our 2,000th contributor, GTAIVFan_09!
February 13, 2026: Help us make our first donation drive a success!
January 31, 2026: better-osm-org adds experimental support for enhancing OpenHistoricalMap’s website interface.
January 31, 2026: OpenStreetMap Americana prototypes a port to OpenHistoricalMap.

Older news

Events

April 10, 2026: Graz Linux Days 2026 in Graz, Austria
April 30, 2026 – May 3, 2026: FOSSGIS OSM Community Meetup 2026 Number 25 in Essen, Germany
June 11, 2026 – June 13, 2026: State of the Map U.S. in Madison, Wisconsin