In moments in whichthe existence of man and/or civilization is in jeopardy, cultural memory can preserve a personal or collective identity. A city, the urban space of an individual or a group identity, is recognized through its memory. The collective experience of the urban spacemarks its identity in archival material.In this dissertation, a research will be carried out that verifies that the archives of St. Michael‟s Parish Church in Osijek is an institution of collective memory and its archival records will be labelled as cultural heritage since they validate the authenticity of the area of Inner City at the turn of the 19th century and in the first half of the 20th century. Being a cultural heritage institution, the archives of the Parish Church manages the collective memory of the city, and nowadays,in times of globalization, socio-political and economic changes, it serves the development of society even more directly. In order to construct the memory of the city in the context of the parish archives at the turn of the 19th century and in the first half of the 20th century, a relational database has been created by the use of the Cataloging Cultural Objects (CCO) standard. This paper offers a model for digitalization of archival material and it does not onlyresult in digitalized reproductions with the aim of preservation and permanent storage of the material, but also in assigningresearch-based metadata to each unit of archival material which can then be retrieved and browsed in the database by the help of predefined element descriptions and controlled vocabularies according to the special needs of the user. Cultural heritage material processed in this way, enriched with the parish priest‟s records in the parish chronicle and his systematic collecting of documents, photos and obituaries, provides for a space-time communicator that complements the memory capacity of the city.