Which of these world capitals is called "the eternal city"?

Rome has been one of the most influential cities in Europe for thousands of years. It is rightly known as the “Eternal City” and Capital of the World because its historical and cultural importance is undeniable. While the Roman Empire was not, in fact, the largest empire ever, it was one of the mightiest of its time. It stretched between Britain and Mesopotamia and was a major cultural, economic, and political center. And Rome was at the heart of it all.

Source: Bidroom