The Centrale Montemartini was a thermoelectric power plant on the Via Ostiense in Rome. Today it is the second exhibition pole of the Capitoline Museums and one of the most innovative examples of the conversion of an industrial archeology building into a museum, the first public plant in Rome for the production of electricity. The vast spaces of the Centrale Montemartini, punctuated by the gigantic surviving machinery, were considered more than ever suitable for experimenting with new museographic solutions. Today it houses about 400 Roman statues, already exhibited in the Capitoline Museums or recovered from the very rich municipal deposits, together with epigraphs and mosaics, in an extraordinary setting of industrial archeology. Two diametrically opposed worlds, archeology and industrial archeology, were brought together for the first time through the courageous staging of the exhibition the Machines and the Gods, opened to the public in October 1997. The interest of the public consolidated its validity of the new exhibition space, so much so that in 2001 it passed from a temporary experiment to the creation of a permanent site: the Museo della Centrale Montemartini. Since then the museum, a branch of the Capitoline Museums, has been enriched with new spaces and new archaeological finds, exhibiting works that had remained closed in the deposits over the years and stolen from the general public. In November 2016, following some renovations, the museum was enlarged with the opening of a new room, where the famous carriages of the Train of Pius IX are exhibited.