Abstract: Several archaeologist, who studied and excavated at the roman city Grumentum (in today’s area of Basilicata) mutually provided urban and territorial data for the first time. The aim of this was to develop a better urban map of Grumentum. Until now because of the absence of broad data it was only possible to present speculative reconstructions. This situation has changed in the last few years: extensive magnetic and electrical surveys, georadar, airphoto analysis, territorial surveys,  reprocessing and historical analysis of former excavations, a huge bundle of new archaeological excavations and, last but not least, the use of the best modern technical possibilities help to create a new and more exact idea about the urbanity and territory of a nearly 1000 years populated Roman city that is well-preserved and has never been overbuilt despite its big territory.

A new starting point for questions regarding urbanity and territory is given by the joining of the data of different scientists and projects. A long lost and misunderstood Roman city becomes an outstanding example in Roman research.

This contribution to the conference tries to present the new findings and the way to these.

Keywords: Prospection, roman cities, territorial survey, roman urbanism