Download Data Set (126 KB)

Download TIF raster files, Soviet satellite image, Military map scan, and DWG file (23.0 MB)

Download PDF with layers (19.4 MB)

Download Description of project (84 KB)


In its original state, the Severan Marble Plan of Rome, placed on the wall of the Temple of Peace between 203 and 211 CE, showed viewers the locations of buildings throughout Rome, and even the groundplan of each of those buildings. It is today an extraordinary piece of evidence for understanding the city in that time period, despite its ruinous state. It survives in over 1,100 fragments, representing only about 10% of its original surface area. To date, scholars have successfully placed only about 100 of those fragments with respect to the buildings they depict. Using GIS and CAD software, I have digitized those fragments whose locations are known and placed them in their appropriate positions over a topographical map and satellite image of the modern city. The file is geo-referenced using the UTM coordinate system, so that the photos and drawings correspond to real-world coordinates. I correlated the placement of individual buildings with excavated remains. Scholars have long known that there are surveying errors on the Plan, though there is disagreement about the number and extent of those errors. One advantage of digitization is its flexibility; one can not only adjust the placement of any individual fragment for greater accuracy, but can also change the spacing and orientation of different buildings on a single fragment. This project gives the most precise understanding yet of the surveying and cartographic methods employed on the Plan, and it allows for the ready integration of future information from newly excavated remains.

The included documents consist of .TIF raster files showing the fragments from La pianta marmorea di Roma antica, by Carettoni, Colini, Cozza, and Gatti (1960); a rectified 1980’s-era Soviet satellite image of the city; a scan of a 1:25,000 military map made by the Italian Istituto Geografico Militare published in 1949; the .DWG file with all of the above placed in it, along with vector layers showing the edges of map fragments and the carvings on the maps. There is also a PDF export of the .DWG file with layers, and a PDF document explaining the project.

Publication Date



Rome, Severan Marble Plan, Temple of Peace, buildings, AutoCAD


Ancient History, Greek and Roman through Late Antiquity | Ancient, Medieval, Renaissance and Baroque Art and Architecture | Art and Materials Conservation | Urban, Community and Regional Planning


This AutoCAD 2000 drawing project relating to an ancient Roman marble map depicting the ground plan of every building in the city in the 3rd century CE was carried out for Prof. Walsh's Master’s degree at the University of Minnesota in 1999 and 2000.

NOTE: Users will have to re-establish the relative links between the .DWG file and the raster images in order to use the file properly.


Justin Walsh

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Share Alike 3.0 License.

Severan Marble Plan of Rome data files