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: Nikola Pritiska Church in Kyiv (Kiev) as of 1709. Right: The same location today.

On this day

Selected establishments and disestablishments on August 30:

1889: Royal Mail's Mount Pleasant Mail Centre opens in London.
1913: Romania annexes Southern Dobruja.
1940: The Second Vienna Award reassigns Northern Transylvania from Romania to Hungary.
1944: During World War II, the Königsberg Castle is reduced to ruins and many more buildings are destroyed in the bombing of Königsberg.
1945: The Japanese occupation of Hong Kong ends as the Imperial Japanese Army hands Hong Kong back to the British Royal Navy.
1946: Rhineland-Palatinate is founded as a state of Germany.
1994: A Meijer supercenter opens in Southgate, Michigan.

Statistics

3.6M
dated elements
758k
buildings
612k
railroad miles
97
average age
1960
average year
2,177
contributors

Source: Overpass API, Overpass API, Planet
August 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

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