Between 18th June and 2nd July 2003, a geophysical survey was carried out at the site of Sentinum, Marche in Italy. The survey revealed a comprehensive plan of the town although in some areas the underlying gravel geology may have masked the detection of some archaeological features. The nature of the features highlighted by the magnetometer survey was diverse ranging from the identification of the town forum to small private residences. The mapping of the road network was a success and it was a revelation that the grid system identified in the survey did not wholly conform to the projected layout in the area to the west.

The ancient city, a few kilometers south west of the modern town of Sassoferrato, dates to the Roman period. To date no evidence has been found which establishes whether this was the first settlement in the area or whether there was an earlier settlement on the site. _Sentinum_ stands on an alluvial plain at the confluence of the torrent of the same name and the river Marena, a short distance from the via Flaminia. The city was linked to the via Flaminia by a road which, passing through the nearby city of _Suasa_, reached _Sena Gallica_. From the epigraphic evidence it is known that it was a _municipium_ ascribed to the tribe of the _Lamonia_ and was part of the VI Augustan region, Umbria. The excavations undertaken in 2002 provided evidence for the reconstruction of the plan of _Sentinum_, with its roads and public and private buildings. In 2004 the western sector was investigated revealing the 4th-5th century A.D. phase, relating to the abandonment of the city. A large building with a portico was also found here, of which the open courtyard paved in _opus spicatum_, the perimeter walls and various adjoining rooms, situated along the line of the railway, were uncovered. In 2005 and 2006 the excavation extended to the eastern sector of the city in correspondence with the crossroads between the _cardo maximus_ and the _decumanus maximus_. In 2006 several public buildings situated at the meeting point of these two main roads were brought to light: a cult area with a small tetrastyle temple, of augustan date, linked to the porticoed building; a large circular monumental fountain and an open space where honorary monuments were placed.