Duration: 2010 to 2022

After Alexander the Great conquered Egypt in 332 BC and his former general Ptolemy founded the Ptolemaic dynasty in 306 BC, a massive temple building program began throughout the country, the roots of which may date back to the 30th Dynasty (380–342 BC) and which was to continue into the third century AD.

The inscriptions in these late temples, which are sometimes difficult to read due to their expanded and specialized hieroglyphic system, contain extensive, diverse, and often unique information about cult and festival events, the religious topography of the Nile region, myths and groups of gods, construction history, and room functions. For this reason, some Egyptologists rightly refer to them as "stone libraries."

In addition to numerous desirable studies on individual topics, there has been a particular lack of a systematic overview of the core content, internal connections, design patterns, and problems of transmission history of the meticulously composed Ptolemaic-Roman temple decoration. One of the main goals of the Heidelberg Academy Project was to remedy this deficiency by gradually compiling a comprehensive index of the content and structure of Greek-Roman temple inscriptions. This was linked to the question of whether the temples reveal a binding set of text genres that form a kind of canon for Egyptian religion.

Although the project primarily dealt with Ptolemaic and Roman temple texts, this task gave it a bridging function to other areas of Egyptology: the analysis of the text tradition contributed to integrating these temple texts into the discipline far more than had previously been the case, transforming them from a specialised field into a natural part of Egyptology. The work of the research center was successfully completed on December 31, 2022.