A nice and relaxing walk departing from the Port in front of the main street of Cagliari, via Roma, walking along the Sea where people run, skate, have a drink..and finishing at the beautiful ancient Sant'Elia 's lazaret.
The Port of Cagliari is one of the largest Italian seaports and one of the largest seaports in the Mediterranean Sea basin, with an annual traffic capacity of around 50 million tonnes of cargo and 1,000,000 TEU's. — Wikipedia
The Marina di Bonaria port ("Su Siccu" dock) is located inside the port of Cagliari, opposite the Bonaria Sanctuary, between the “New Levino Basin” and the “Salt Darsena”.
The Lazzaretto di Cagliari or Sant'Elia is a historic building in Cagliari, home to the homonymous cultural center. It is located in the Sant'Elia district. — Wikipedia