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 Intramuros quarter of Manila as of 1900. Right: The same location today.

On this day

Selected establishments and disestablishments on June 20:

1863: The State of West Virginia is formally separated from the Commonwealth of Virginia and admitted to the Union, though most of West Virginia had been effectively independent of Virginia since 1861.
1922: Upper Silesia is divided between the Weimar Republic and Poland.
1928: Chihli (Zhili) is replaced by Hopeh (Hebei) province.
1932: Adamson University is established as the Adamson School of Industrial Chemistry in Manila.
1947: The Jägerdenkmal in Dresden is removed by order of the Soviet military administration.

Statistics

3.3M
dated elements
732k
buildings
567k
railroad miles
99
average age
1957
average year
2,112
contributors

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

Historical statistics

News

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.
February 20, 2026: JOSM’s Changeset Viewer plugin adds support for OHMCha.