The Romans carried many of them from Egypt to Rome, Arles, and Constantinople, most of which were afterwards overturned, but have been put together and replaced in modern times. Augustus, for instance, had two large obelisks brought from Heliopolis to Rome, one of which he placed in the Campus Martius. The other stood upon the Spina, in the Circus Maximus, and is said to have been the same which king Semneserteus (according to Pliny) erected. At the sack of Rome by the barbarians, it was thrown down, and remained, broken in three pieces, amidst the rubbish, until, in 1589, Sixtus V. had it restored by the architect Domenico Fontana, and placed near the church Madonna del Popolo. Under Caligula, another large obelisk was brought from Heliopolis to Rome, and placed in the Circus Vaticanus. It has stood, since 1586, before St. Peter's church: it is without hieroglyphics; and, with the cross and pedestal, measures 126 feet in height. It is the only one in Rome which has remained entire. Its weight is estimated at 10,000 cwt. Claudius had two obelisks brought from Egypt, which stood before the entrance of the Mausoleum of Augustus, and one of which was restored in 1567, and placed near the church of Santa Maria Maggiore. Caracalla also procured an Egyptian obelisk for his circus, and for the Appian Way. The largest obelisk (probably erected by Rameses) was placed by Constantius II., in the Circus Maximus at Rome. In the fifth century, it was thrown down by the barbarians, and lay in pieces upon the ground, until Sixtus V., in 1588, had it raised upon the square, before St. John's church of the Lateran, thence called the _Lateran obelisk_. It is beautifully adorned with sculpture; its weight is 13,000 cwt.; its height, exclusive of the pedestal, 140 feet; with the pedestal, 179 feet. Several others have been erected by succeeding popes. REMOVAL OF AN OBELISK BY FONTANA. The following curious account of the removal of the obelisk in the Circus Vaticanus to the centre of St. Peter's square, by Domenico Fontana, is extracted from Milizia's life of that famous architect. It shows plainly that the Egyptians must have attained great skill and perfection in mechanics and engineering, to have been able to quarry out obelisks at least a third larger, and convey them often several hundred miles, to the places where they erected them. "Sixtus V. was now desirous of raising in the centre of the square of St. Peter's the only obelisk which remained standing, but partly interred, near the wall of the Sacristy, where was formerly the Circus of Nero. Other pontiffs had had the same wish, but the difficulty of the enterprise had prevented the execution.