OpenHistoricalMap is an interactive map of the world throughout history, created by people like you and dedicated to the public domain. OpenHistoricalMap is a charter project of OpenStreetMap U.S., a …

Jul 29, 2025 · Building the world’s most out-of-date map OpenStreetMap for Roman roads? Middle Kingdom cities? 1890s railways? OpenHistoricalMap is aiming to create the most comprehensive, …

OpenHistoricalMap allows anyone with a free account to contribute directly to the map through an editor such as the iD Web application or the JOSM desktop application.

The aim is the creation of a web-GIS platform containing spatial historical and archaeological data. OHM is an open source project using open source tools. The code is available on github.

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.

OpenHistoricalMap is an ambitious, community-led project to map changes to natural and human geography throughout the world… throughout the ages.