As part of the project for Line C of the Rome underground a station is to be built in the area of Piazza Venezia. The first phase of the archaeological investigation which aimed to establish the viability of the construction, uncovered a complex archaeological stratigraphy, which, without interruption, documented the occupation of the area from the 1st century A.D. until the present day. _Period 1 (1st-2nd century A.D.)_ The excavation uncovered part of an insula comprising three rectangular rooms with a staircase which can be interpreted as tabernae. The complex faced west directly onto the via Lata, of which a part of the basalt paved surface emerged at 13.75/13.91 m a.s.l. _Period 2 (end of the 2nd-5th century A.D.)_ Towards the end of the 2nd century A.D. vast restructuring of the Flavian complex was undertaken. The rooms facing onto the via Lata were rebuilt from the stringcourse upwards and a new opening was made on the eastern side to link the rooms to a corridor behind. During the course of the 4th and 5th centuries only a few maintenance operations were documented such as the re-paving of some floors, the reparation of the foundations and restoration of the entrances. These operations do not constitute elements of discontinuity with respect to the past, in fact, the building complex seemed to maintain the same aspect as it had in the Severan period. _Period 3 (first half of the 6th-7th century)_ Substantial production activity was documented across the area in the period around the middle of the 6th century. This was particularly concentrated in the rooms facing onto the road. The excavations brought to light a metalworking installation, constituted by a series of pits associated with numerous indicators for the production of artefacts in copper alloy. Between the second half of the 6th and the 7th century the metalworking installation, by then no longer in use, and the rooms in the insula were reused for both construction and funerary purposes. Three inhumation burials without grave goods were found in the tabernae and corridor behind. _Period 4 (8th-first half of the 9th century A.D.)_ The most important evidence for the first centuries of the early medieval period was a lime kiln that was positioned in the eastern area of the excavation. The structure, of which the circular kiln circa 1.90m in diameter was preserved, can be dated to the 8th century. For the first half of the 9th century there was evidence of renewed building activity. The room facing onto the road continued to be used as dwellings, even occupying the kerbs at the roadside. The greatest change involved the via Lata itself, where, a series of cobbled surfaces began to create a gradual but continuous rise in the height of the road surface. _Period 5 (second half of the 9th-first half of the 12th century)_ The devastation and collapses caused by the earthquake of 847 led to the demolition of what remained of the ancient complex. The inner rooms were filled with rubble. From that moment until the 12th century the rooms were used as dumps and were also robbed. However, the via Lata remained free of rubble and continued to be used as the main road. _Period 6 (12th-14th century)_ The 12th and 13th centuries saw the beginning of new urban planning in the area. The space was densely populated by then with houses of a certain importance facing onto both sides of the street. Behind were open spaces destined for artisans activities, as a glass kiln dating to the 14th century would seem to attest. _Period 7 (15th-20th century)_ In the 15th century the area was occupied by the aristocratic residences Palazzetto Venezia and Palazzo Parraciani, situated respectively to the west and east of the via Lata, then called the via della Ripresa dei Berberi. The excavation uncovered an ample portion of the cellars of Palazzo Parraciani. These structures, as is known, remained standing until they were demolished at the end of the 19th century to make way for the construction of the Vittoriano complex, which completed in 1912, was to give the piazza its present aspect.