The new Piazza in the Fuorigrotta quarter (Naples) is marked by the immaterial relationships between three 40-meter obe-lisks, urban symbols recalling the 18th century festival ma-chines. The Tower of Time and Fluids, in laminated timber, symbolizes ecological concerns; the Tower of Information, in aluminum, represents the evolution of information systems; the Tower of Memory, in stone and steel, is a sort of peri-scope which allows views beyond to the sea and the city cen-tre. So symbolically defined, the new piazza is a pedestrian area “fenced” by the wooden paving and crossed by rivulets of water which flow from a large stepped fountain.