The 150ft-long stretch of basalt road has been cleared, cleaned and made into a permanent attraction for customers, both inside and outside--under a glass floor. Tour guides take visitors under the floor to for a walk on the ancient pavement, but it's not clear if snacks are provided or food and drink is permitted.
The truth is, finding ancient ruins while digging for new construction is not at all uncommon in Italy. The Roman Empire is literally everywhere... right under your feet.
Happy dining, kiddies!