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 Choongwan district of the City of Victoria in Colonial Hong Kong as of 1800. Right: The same location today.

On this day

Selected establishments and disestablishments on July 27:

1788: In the United States, the Northwest Territory establishes Washington County, which overlaps with much of Connecticut's Western Reserve, an implicit challenge to Connecticut that apparently goes unanswered.
1953: The Korean Armistice Agreement establishes a Military Demarcation Line and Demilitarized Zone that replaces the 38th parallel as the border between North Korea and South Korea.
1967: The Welsh Language Act legally separates England and Wales into England and Wales.
1977: A McDonald's opens in the Palais Wertheim in Vienna.
1997: In Loveland, Ohio, South Taylor Street is renamed Karl Brown Way after the city's former mayor.
2021: Mapbox closes its San Francisco office after eight years in three locations.

Statistics

1.2M
dated elements
387k
buildings
234k
railroad miles
125
average age
1931
average year
1,445
contributors

Source: Overpass API, Overpass API, Planet
July 3, 2024

Historical statistics

News

July 7, 2024: Gramps Web can now visualize your family tree on an OpenHistoricalMap base map.
June 26, 2024: Changeset 125,000 is created by mane72.
June 24, 2024: Recorded talks from State of the Map U.S. are now available on the OpenStreetMap U.S. website.
June 18, 2024: The official stylesheets have moved to a new location once again. If you have a website or application that embeds an OpenHistoricalMap-based style, please update to the new URLs to avoid showing broken map tiles.
June 12, 2024: A version of Overpass Ultra has been preconfigured for OpenHistoricalMap at ohm.overpass-ultra.us.