Caput Mundi

Caput Mundi is a Latin phrase which literally means "Head of the world" whereas Roma Caput Mundi means "Rome capital of the world" and is one of the many nicknames given to the city of Rome throughout its history.

The phrase is related to the enduring power of the city first as the capital of the Republic and the Empire, and later as the centre of the Catholic Church.

Although it is not known for sure when it was first used, Rome was already named in this way by the poet Ovid in 1st century BC.

Along with "Eternal City" and the "City of Seven Hills", Caput Mundi remains as one of the most commonly used names to refer to the city of Rome.

Meaning
Roma Caput Mundi is a Latin phrase taken to mean "Rome capital of the world" and "Roma capitale del mondo" in Italian (literally: "head of the world"). It originates out of a classical European understanding of the known world: Europe, North Africa, and Southwest Asia. The influence of Rome in the ancient world began to grow around the 2nd century BC as the Republic expanded across Southern Europe and North Africa. For the next five centuries, Rome governed much of the known world (of traditional Greco-Roman geography) and served as the world's largest city during that period. The cultural influence of the local language of Rome (Latin) as well as Roman art, architecture, law, religion, and philosophy was significant. The Imperial city of Rome adopted as its nickname Caput Mundi, attributing this to its perception of an enduring power of Ancient Rome and the Catholic Church.