Historical Map Overlays for Google Maps and Google Earth

Where To Find and View Georeferenced Historical Maps

You can overlay any historic map in Google Maps or Google Earth, but getting everything to match up accurately through geo-referencing can be quite tedious. In some cases others have already done the hard part, making available free downloads of historical maps sized, geo-referenced and ready for you to import directly into Google Maps or Google Earth.

120 map overlays for Google Maps from the David Rumsey Historical Maps Collection
120 historical maps from around the world are available as overlays for Google Maps. © 2016 Cartography Associates

Over 120 historical maps from the David Rumsey collection of more than 150,000 historical maps have been georeferenced and made freely available in Google Maps, and as a historical maps layer for Google Earth. More »

Historic Map Works has almost half of its 1+ million historical maps available in its free Historic Earth Overlay Viewer.
Historic Map Works has almost half of its 1+ million historical maps available in its Historic Earth Overlay Viewer, including this 1912 map of the Fenway area of Boston, Massachusetts. Historic Map Works

Historic Map Works features over 1 million maps from around the world in its collections, with a focus on maps from North America. Several hundred thousand of the maps have been geo-referenced and can be viewed for free as historical map overlays in Google through their free Historic Earth Basic Overlay Viewer. Additional features are available through a Premium Viewer available to subscribers only. More »

Explore Ordnance Survey and other historical maps for Scotland overlaid on a modern map. National Library of Scotland

Locate, view and download free Ordnance Survey maps, large-scale town plans, county atlases, military maps and other historical maps from the National Library of Scotland, geo-referenced and overlaid upon Google maps, satellite and terrain layers. Maps date between 1560 and 1964 and relate primarily to Scotland. They also have maps of a few areas beyond Scotland, including England and Great Britain, Ireland, Belgium and Jamaica.  More »

The New York Public Library offers a great selection of georeferenced historical maps, as well as a tool that allows you to georectify other digital maps from their collection.
The New York Public Library offers a great selection of georeferenced historical maps, as well as a tool that allows you to georectify other digital maps from their collection. New York Public Library

The New York Public Library has been working to digitize their huge collection of historical maps and atlases for more than 15 years, including detailed maps of NYC and its boroughs and neighborhoods, state and county atlases from New York and New Jersey, topographic maps of the Austro-Hungarian empire, and thousands of maps of US states and cities (mostly east coast) from the 16th to 19th centuries. Many of these maps have been georectified through the efforts of library staff and volunteers. Best of all, those which haven't are available for you to georeference yourself through their cool online "map warper" tool! More »

The Greater Philadelphia GeoHistory Network serves up historic maps of Philadelphia from 1808 to the 20th century overlayed on modern Google maps.
1855 Map of Philadelphia city overlayed on a modern Google Map. Greater Philadelphia GeoHistory Network

Visit the Interactive Maps Viewer to view selected historic maps of Philadelphia and surrounding areas from 1808 through the 20th century—plus aerial photographs—overlayed with current data from Google Maps. The "crown jewel" is a full-city mosaic of the 1942 Philadelphia Land Use Maps. More »

More than 8,000 georeferenced historical maps from around the world can be accessed online from the British Library.
More than 8,000 georeferenced historical maps from around the world can be accessed online from the British Library. British Library

More than 8,000 georeferenced maps from around the world are available online from the British Library—just select a location and map of interest to visualize in Google Earth. In addition, they offer a great online tool that allows visitors to georeference any of the 50,000 digitized maps they have online as part of this project. More »

An 1877 map of Charlotte, North Carolina can be overlayed over a current map in Google Maps and Google Earth
Portion of an 1877 map of Charlotte, North Carolina from the NC Historic Overlay Maps collection. North Carolina Collection, University of North Carolina at Chapel Hill

Selected maps from the North Carolina Maps Project have been geo-referenced for accurate placement on a modern day map, and made available for free download and viewing as Historic Overlay Maps, layered directly on top of current road maps or satellite images in Google Maps. More »

Historical maps of Parish from the 16th century through the 20th century can be viewed as overlays on a current Google map of Paris.
An 1834 historical map of Paris overlaid on a current Google map of Paris. Amherst College

The student-run Cityscapes project at Amherst College includes a Paris mapping project, with historical map overlays of the city from various time periods. Use the sliders to display maps from various time periods ranging from 1578 to 1953 overlaid on a current Google map of Paris. More »

View 20 historic maps of New Mexico as overlays in Google Maps.
View 20 historic maps of New Mexico as overlays in Google Maps. New Mexico Humanities Council

View twenty historic maps of New Mexico, annotated with descriptions by the mapmakers and by other people living, working, and exploring in New Mexico at that time. Click on the thumbnail of each historic map to view it in Google Maps. More »

Explore over 2,000 old maps of Russia and other locations around the world in Retromap.
Explore over 2,000 old maps of Russia and other locations around the world. Retromap

Compare modern and old maps of Moscow and Moscow region with maps from various regions and eras, from 1200 to present-day. More »

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Hypercities
This crowd-sourced digital mapping platform "allows users to travel back in time and explore the historical layers of city spaces.". Harvard University Press

Using Google Maps and Google Earth, HyperCities essentially allows users to go back in time to create and explore the historical layers of city spaces in an interactive, hypermedia environment. Content is available for a wide number of locations around the world—including Houston, Los Angeles, New York, Chicago, Rome, Lima, Ollantaytambo, Berlin, Tel Aviv, Tehran, Saigon, Toyko, Shanghai and Seoul—with more to come. More »