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: The Universal Exhibition of Paris in 1867. Right: The same location today.

On this day

Selected establishments and disestablishments on April 30:

1803: The United States purchases Louisiana from France.
1891: The municipality of Venâncio Ayres (now Venâncio Aires) is established in Rio Grande do Sul, Brazil.
1894: Roma San Pietro station opens in Rome.
1950: Northwestern Arizona is moved from the Pacific Time Zone to the Mountain Time Zone at 2 o’clock in the morning, putting the entire state in the same time zone for the first time.
1975: In the Vietnam War, the Republic of South Vietnam is proclaimed as South Vietnam and its capital, Saigon, fall to Communist forces.
2015: Joshin Super DenDen Land opens in Osaka.

Statistics

1.7M
dated elements
437k
buildings
287k
railroad miles
133
average age
1933
average year
1,627
contributors

Source: Overpass API, Overpass API, Planet
March 1, 2025

Historical statistics

News

February 12, 2025: QLever examples have been updated to reflect an improved data model for members of relations and ways and more metadata.
January 23, 2025: Basic authentication is no longer supported. Update your JOSM configuration to continue editing.
December 3, 2024: Follow our new Bluesky account (bridged from Mastodon) for occasional updates.