Along the street Via San Gregorio, downhill on the left, there are significant remains of walls and pavement, connected to the forum situated just above. They certainly belonged to workshops or tabernae, now parts of shops and houses. Walls of limestone ashlars and herringbone terracotta pavements spread toward the east. Significant remains of a prestigious domus have been discovered in the area: its remains and frescoes (including one of the elegant Perseus), are no longer on site and can be seen in the museum of the Roman Forum.

The richness of this house indicates that there were wealthy people living here. Their wealth depended mostly on activities associated with the pureness of the waters and on the production and sale of the water related products in the nearby shops.