Caput Mundi is a Latin phrase taken to mean "capital of the world" (literally: "head of the world"; see capital, capitol). It originates out of a classical European understanding of the known world: Europe, North Africa, and Southwest Asia. Because of the enduring power of the Roman Republic and Roman Empire, and the Roman Catholic Church, in this sphere, the city of Rome has been known for centuries as Caput Mundi.
Read more about Caput Mundi: Rome, Constantinople, London, Berlin, New York City, Washington, D.C.