This historic landmark is what remains of the 1st-century BCE Portico d’Ottavia, a colossal rectangular portico that measured 119m by 132m. Named after the sister of Augustus, during whose reign it was constructed, it was heavily restored in the 3rd century and housed Rome's fish market from the Middle Ages until the 19th century.
Behind the portico is the 8th-century Chiesa di Sant'Angelo.
