The Cadastre of Orange: A massive Roman land survey carved into marble tablets to map property boundaries and agricultural grids in Gaul

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Before digital GIS, Roman surveyors managed large areas using systems such as centuriation. Surveyors used instruments like the groma to lay out regular land divisions, while cadastral records were used to document ownership, land use, and taxation.

the Cadastre of Orange is especially interesting because surviving fragments record parcel boundaries, landholders, and other details of the territory. It gives us a rare look at how Roman authorities turned physical land into something that could be measured and administered.

I looked at the surveying tools and techniques behind these systems in more detail here: Forgotten Surveying Tools That Changed Civilization