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 1964–65 World’s Fair in Queens, New York City. Right: The same location today.

On this day

Selected establishments and disestablishments on July 21:

1873: The Muskegon and Big Rapids Railroad begins service in Michigan.
1940: The Estonian, Latvian, and Lithuanian Soviet Socialist Republics are nominally established under Soviet occupation.
1988: The Sydney Monorail begins service in Sydney.
2003: Gelato di Roma opens for business in Wyandotte, Michigan.
2018: The Skyway opens to traffic in Metro Manila.

Statistics

3.6M
dated elements
745k
buildings
593k
railroad miles
97
average age
1960
average year
2,149
contributors

Source: Overpass API, Overpass API, Planet
July 2, 2026

Historical statistics

News

July 10, 2026: You can filter search results by the city, region, and country.
April 16, 2026: The official vector tilesets are now available as TileJSON.
April 15, 2026: Our tagging pages more consistently link to other OHM tagging pages instead of often conflicting OSM tagging pages.
April 14, 2026: The tile server has migrated from Tegola to Martin for improved reliability and performance.
April 1, 2026: OpenHistoricalMap Quality and Coverage Stats is a new dashboard for tracking common errors in OHM data.

Older news

Events

August 28, 2026 – August 30, 2026: State of the Map in Paris
October 27, 2026 – October 29, 2026: State of the Map LatAm in Mexico City
November 2, 2026 – November 4, 2026: FOSS4G North America in Sacramento, California