Prior to the construction of an underground car park in the area between corso Europa and via Borgogna, the Archaeological Superintendency ordered the excavation of five trial trenches. These aimed to evaluate the potential of the archaeological deposit.

In fact, the area is situated in the north-eastern sector of the Roman town, at the edge of the enlargement of the town walls undertaken in the Maximian period. It is presumed that the walls coming from the direction of via Montenapoleone crossed piazza S. Babila to the south, turning towards corso Europa and curving to the south-east in the direction of via Durini, via Verziere and via delle Ore where they met with the earlier curtain wall. Characterised by an abundance of water, Maximian period building in this sector of the town underwent a renewed stimulus. This resulted in the monumentalisation of the area between corso Vittorio Emanuele and corso Europa, with the construction of the imposing complex of the Herculean Baths. Furthermore, along via Borgogna the presence of a twelfth century church dedicated to S. Stefano, in Borgogna is documented. According to the archives it was still in use until the first decades of the 20th century, albeit as a wood store.

The most interesting results came from trench 3, which revealed a ditch which may be put into relationship with the line of the urban walls from the Maximian period.