Next to Croce Palace, it too has entrances on two parallel streets. The magnificence of the palace, still well preserved in its original architectural and decorative elements, symbolises the economic power of the family. King Ferdinand of Bourbon was hosted here in 1832.
In the atrium of the palace you can see an inscription from Roman times, discovered at the beginning of the 19th century, bearing the name of a priestess of Ceres and Venus, belonging to the gens Mamia.