The archaeological area of Viale Trieste located at number 105 is below the internal parking lot of the Department of Tourism, Handicrafts and Trade of the Region of Sardinia. This is a multi-layered site of settlement character, datable between the Republican and Late Empire ages, which fits into the circuit of Roman Cagliari, the fulcrum of which is identified at the present-day Piazza del Carmine. Structures referable to the earliest phase, identify quadrangular rooms bordered by masonry in isodomic work consisting of large limestone blocks. Within some of them, fragments of cocciopesto and limestone pavement were revealed. The remains of a mosaic pavement and a cistern can be traced to a later phase. The cistern, partly excavated in the rocky bank and partly built, intercepts a spring vein, is rectangular in shape and consists of three rooms with a total length of about 12 meters. To the west of the rooms is a section of sewer conduit, laid with ashlars and bricks. The site was brought to light in the 1980s. An excavation campaign conducted between 2010 and 2011 completed the archaeological investigation.
