Traces of Roman paving are still visible near the deconsacrated church of St. Domenico, which houses the Museum of the Wool Guild. In front of the church, a door with a Gothic arch was probably the entrance to a Medieval shop.
This testify to the diverse planning layers and styles which characterize the built-area around the street, comprising lanes, ramps and alleys. Elegant buildings, dating back to the 17th, 18th and 19th century look via dell’Aquila Romana with their stone doors, often embellished with friezes and coats of arms engraved by local stone-cutters; some of them are particularly valuable.
The underground layout of the Roman Cloaca Maxima (1st century BC) runs along the street. In truth, the sewers run underneath the whole town, but here they have been brought to light in the foundations of some of the many elegant palaces which face this historical street.