The opinions are divided towards the date of the building of the first Roman-Catholic Cathedral in Alba Iulia, sometimes are contradictory and either state a date considered too early (the 11th century during the reign of Stephen I, 997-1038), or at the beginning of the 12th century, taking the term ante guem, the year 1111, when it was mentioned the first bishop of Alba Iulia, the building being attributed to the end of the reign of King Ladislaus the Saint (1077-1095).
The plan of the new cathedral - a basilica with three naves, two towers in the west and a central apsis - was a novelty for Transylvania besides the richness of the decor and the proportions of the constructions.
Extensive interventions on the cathedral were made with the help of Governor John of Hunedoara (1441-1456), and the western facade was endowed with a new terrace which was placed between the two towers above the atrium.
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