The Roman Cisterns
The great Roman cisterns are considered an authentic heritage of the Age Hydraulic art, as well as an ingenious idea of Vitruvius. Almost certainly we decided to achieve those that are commonly called epuratory or limaria pools to respond to a hydrated hydrates otherwise not fulfilled. The large underground complex, datable at the end of the I sec.A.C., is unique in Italy by extension (about 2200 square meters). For storage and subsequent delivery, three tanks were built, arranged on the gyrfalcus, in the current temistocle honest calzecchi and in Via degli Aceti which obviously were at different heights. The first currently cannot be visited because it is completely underground while the second, known with the name of small tanks, it is. Its reach is lower than that of the tank located in Via degli Aceti, which however has a significant difference from a proper point of view of the smallest. The interior consists of thirty rooms distributed in three rows, each of which has a masonry covered with Opus Signinum or Cocciopesto which, as Vitruvius writes, was mainly used in the manufacture of tanks, aqueducts, thermal pools because they are the impermeabilization of mortar of lime. It is very suggestive to come across the written desuete as "calm, exit", dating back to the Second World War, when the rooms were used as a refuge against bombing.