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: Lille under Dutch occupation in 1710, during the War of the Spanish Succession. Right: The same location today.

On this day

Selected establishments and disestablishments on September 9:

1816: The Oberamt of Meisenheim is established in the landgraviate of Hesse-Homburg.
1850: California becomes the 31st state of the United States.
1850: Utah Territory is established from the territory ceded by Mexico in the 1848 Treaty of Guadalupe Hidalgo, from territory to be purchased from the state of Texas in December 1850, and from unorganized federal territory.
1927: The 107th Infantry Memorial is dedicated in New York City.
1931: The Tábor kahal is established in Czechoslovakia.
1948: North Korea is established.
1993: In Kazakhstan, Dengiz district is renamed Kurmangazinsky district in honor of Kurmangazy Sagyrbayuly.
2016: A section of the Donghae Expressway opens between Donghae and Samcheok in South Korea.

Statistics

3.6M
dated elements
758k
buildings
612k
railroad miles
97
average age
1960
average year
2,219
contributors

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

Historical statistics

News

July 23, 2026: You can make advanced edits right inside your Web browser using Level0.
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.

Older news

Events

September 11, 2026: BayGeo/SJSU SAVI GeoEducation Summit in San José, California (register)
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