The city of Rome harbours thirteen ancient obelisks, the most in the world. There are eight ancient Egyptian and five ancient Roman obelisks in Rome, together with a number of more modern obelisks; there was also until 2005 an ancient Ethiopian obelisk in Rome.
The Romans used special heavy cargo carriers called obelisk ships to transport the monuments down the Nile[clarification needed] to Alexandria and from there across the Mediterranean Sea to Rome. On site, large Roman cranes were employed to erect the monoliths.