different aqueducts, in case one was shut down for service. During the 17th and 18th century, the Roman popes reconstructed other degraded Roman aqueducts and built new display fountains to mark their termini, launching the golden age of the Roman fountain. The fountains of Rome, like the paintings of Rubens, were expressions of the new style of Baroque art. In these fountains, sculpture became the principal element, and the water was used simply to animate and decorate the sculptures. They, like baroque gardens, were "a visual representation of confidence and power". Statues Rome is well known for its statues but, in particular, the talking statues of Rome. These are usually ancient statues which have become popular soapboxes for political and social discussion, and places for people to (often satirically) voice their opinions. There are two main talking statues: the Pasquino and the Marforio, yet there are four other noted ones: il Babuino, Madama Lucrezia, il Facchino and Abbot Luigi. Most of these statues are ancient Roman or classical, and most of them also depict mythical gods, ancient people or legendary figures; il Pasquino represents Menelaus, Abbot Luigi is an unknown Roman magistrate, il Babuino is supposed to be Silenus, Marforio represents Oceanus, Madama Lucrezia is a bust of Isis, and il Facchino is the only non-Roman statue, created in 1580, and not representing anyone in particular. They are often, due to their status, covered with placards or graffiti expressing political ideas and points of view. Other statues in the city, which are not related to the talking statues, include those of the Ponte Sant'Angelo, or several monuments scattered across the city, such as that to Giordano Bruno in the Campo de'Fiori. Obelisks and columns The city hosts eight ancient Egyptian and five ancient Roman obelisks, together with a number of more modern obelisks; there was also formerly (until 2005) an ancient Ethiopian obelisk in Rome. The city contains some of obelisks in piazzas, such as in Piazza Navona, St Peter's Square, Piazza Montecitorio, and Piazza del Popolo, and others in villas, thermae parks and gardens, such as in Villa Celimontana, the Baths of Diocletian, and the Pincian Hill. Moreover, the centre of Rome hosts also Trajan's and Antonine Column, two ancient Roman columns with spiral relief. The Column of Marcus Aurelius is located in Piazza Colonna and it was built around 180 AD by Commodus in memory of his parents.