Building the world’s most out-of-date map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 OpenHistoricalMap is aiming to create the most comprehensive, most out-of-date map of everything that’s existed from Then through Now.
Meet the team
News and talks
See all postsOpenHistoricalMap: The Most Open-Ended Map in History
OpenHistoricalMap (openhistoricalmap.org) is a time machine brought to you by the community that built OpenStreetMap. Zoom into any neighborhood in the world, turn to any time period in history, and there you...
Turbulent Waters: Showing the Historical Extent and Impact of Natural and Human Activities in OpenHistoricalMap
Historic (and prehistoric) changes in water levels, some due to dam building and others resulting from natural processes, have had significant influence on geography. The changes include dam construction, a major dam...
Lowercase history: micromapping the past
History is about far more than empires, wars, and migration. The same attention to detail that makes OpenStreetMap special – that human touch – also makes OpenHistoricalMap stand out in the field...
Event Mapping: new territory for OpenHistoricalMap
Experimentation has started on mapping events in OpenHistoricalMap. Potential subjects include the routes of explorers and their expeditions, and mapping battles and campaigns. We will discuss available resources, static elements (traditional mapping),...
State of the OpenHistoricalMap 2024
This session will provide an overview of the health of the OpenHistoricalMap project, as measured by active user growth, data contributed, supporting systems that are in place, as well as by reviewing...
