How Leonardo da Vinci made a "satellite" map in 1502

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Published on 11 Apr 2019, 12:00
It was a feat of technological and symbolic imagination. And it was pretty accurate, too.

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Leonardo da Vinci’s known for his art and inventions — but also his groundbreaking maps, like this one of Imola, Italy. In this episode of Vox Almanac, Vox’s Phil Edwards explores how it was made.

Further reading:

1) John Pinto’s History of the Ichnographic City Plan is useful to understand the history of these maps.
2) Check out Portraying the City in Early Modern Europe: Measurement, Representation, and Planning by Hilary Ballon and David Friedman for more info.
3) If you want to dig deeper into early maps, Jessica Maier’s Mapping Past and Present: Leonardo Bufalini’s Plan of Rome is fascinating.

Please email Phil if you have trouble finding any of these papers.

Drafting 1502’s equivalent to a “satellite” map was a massive undertaking, and Leonardo managed to pull it off. His early map helped Italian politcian Cesare Borgia construct an idea of the town of Imola that was far more accurate than most contemporary maps. Through the use of careful measurements of angles and pacing out distances using a primitive odometer, Leonardo managed to create a map that was very close to accurate.

This map — an “ichnographic” map — was a step forward in portraying how maps could work to represent geography. Though it’s marked with some inaccuracies, it’s stunningly precise for the time and pushed forward the art of mapmaking. Leonardo’s Imola remains, even today, a remarkably useful guide to the city.

In Vox Almanac, Senior Producer Phil Edwards explains the world through history's footnotes.

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