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 Venetian star fort of Palmanova in 1600. Right: The same location today.

On this day

Selected establishments and disestablishments on March 6:

961: The Byzantine victory at Chandax ends the Emirate of Crete.

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.