It is interesting fact that our current Prime Minister who is a devout Catholic wrote for the Catholic Bulletin and crossed over to politics. I see this as proof the church is still very much alive and wielding power from the shadows. It appears if this is the case that no much changes over many centuries when it concerns the church or its derivatives who have all learned very well.
The word we see a lot when hearing Roman Catholic Terminology is the word "See" or "Holy See". This word is derived from Diocese.[sees]
I spend a lot of time reading history and in particular lately the histories attached to the Duchy's and to the Roman Empire and the Holy Mother Church as it was affectionately known by those who loved the church for what it offered.
Metropolis (or metropolia or metropolitanate): an ancient diocese (especially in Byzantine areas) or set of dioceses with a metropolitan as the ruling bishop or primate. A metropolis may have constituent dioceses.
A metropolis is a see or city whose bishop is the metropolitan of a province. Metropolises, historically, have been important cities in their provinces.
[Reference to Archdioceses]
A diocese, from the Greek term διοίκησις, meaning "administration", is the district under the supervision of a bishop. It is also known as a bishopric.
A diocese is divided into parishes (in the Church of England into benefices and parishes). This structure of church governance is known as episcopal polity.
Images @ Eminpee Fotography