Rome 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. 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
Fontana di Piazza Colonna to the foot of the column of Marcus Aurelius. The source of the water for the fountain of Piazza Colonna was only 67 feet above sea level; like the Trevi Fountain, the Fontana della Barcaccia, and the fountains of Piazza Navona, all connected to the Acqua Vergine, the fountain of Piazza Colonna was unable to jet water high into the air. The original project of Della Porta was to place an antique Roman statue of a sea god, called Marforio, in the fountain, against a background of a rocky grotto, behind which the column of Marcus Aurelius would be seen.