Join the Mapping Movement
Create your free profile and build the world’s largest historical map database. Whether you want to explore, georeference, or simply share – there’s a place for you here.
Georeference historical maps
Many historical maps added by the community are waiting to be georeferenced, and anyone can help bring them to life! Georeferencing connects these maps to real-world locations, making them searchable, interactive, and invaluable for historical exploration.
The process is simple:
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Select a map
Select a map and start earning points for your first contributors.
2
Georeference
Align it with modern geography using the online tool.
3
Discover
Discover how your contribution unlocks stories of the past for a global audience.
Start today and make a meaningful impact
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Find & Add New Maps
Become a map hunter! Thousands of maps are still waiting to be discovered and pinpointed. Adding new maps to the OldMapsOnline portal is simple. Help expand the collection and reveal the stories hidden within these cartographic treasures.
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Support library project
Help make old maps from archives around the world easier to discover. Assign geographical locations to scanned maps, enhance their metadata, and make them geographically searchable and accessible online to a broad audience. Currently, the following georeferencer pilots are open: David Rumsey Map Collection
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Test your skills
Enjoy a bit of friendly competition! Georeference as many maps as possible to earn points and move up the leaderboard. Contribute by assigning geographical locations to historical maps while connecting with fellow history enthusiasts in a fun and rewarding way.
