The Archivio Generale Arcivescovile di Bologna (generally abbreviated as AAB) is the main repository of the Archbishop of Bologna and contains documentation from the Middle Ages to modern times. The institution also houses smaller archives, both clerical and private, from the 10^th century onward. The current amount of archival materials are more than tens of thousands, with more needing to be catalogued before they can be released to the public. However, a first initial access tool to the documentation is now available: the online guide.

The Archive presents itself