Although the Eucharistic prayer was celebrated versus populum, the other parts of the liturgy pertaining to the Altar were celebrated ad-orientem, and if there was the desire to celebrate that way it certainly could be done. Other key things to note were:
- the Ciborium Magnum over the High Altar
- the Archbishop's throne in its original position
- the original High Altar, which for this Mass was adorned by 7 candlesticks, being for this Mass celebrated by the ordinary, placed at the back of it
- Deacons proclaiming the Word (no lay people reading)
- the ringing of the bells; not only the bells within the sanctuary being rung 4 times at each elevation (three at the elevation and once at the genuflection) but also the outside bells in the bell towers to proclaim to the city that the sacrifice had been made
- male only servers
- no communion in the hand (with some members of the congregation kneeling at the Communion rails to receive)
You can see what the outside of the church looks like here.
I have therefore made the interior shot the master pic to be more symbolic of the reform-of-the-reform ideal.