29. July 2026

Uni Bonn On Tour: Digging in Ostia near Rome Uni Bonn On Tour: Digging in Ostia near Rome

The format sees members of the public ask researchers questions that they answer on the go.

In the University of Bonn’s “Uni Bonn On Tour” feature, researchers reveal details of their unusual workplaces all around the world and provide insights into their day-to-day life (and research). What exactly they talk about depends on what questions they are asked by the general public. In September, archaeologist Professor Sabine Feist and her team will be traveling to Ostia in Italy, where they will be excavating one of the oldest and largest churches of its kind ever discovered. Next door to it is a bishop’s residence complete with sumptuously furnished aula, or “grand hall.” Members of the public are invited to email their questions to the archaeologists at kommunikation@uni-bonn.de or using the University‘s Instagram account @universitaetbonn.

Excavating a grave.
Excavating a grave. © Ostia project archives
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Even though there is hardly any uncharted territory left on the map, many secrets of times past have now been revealed and modern technologies are making researchers’ lives easier, field trips are still uncovering previously unknown things and exerting a particular fascination on us. But what exactly does a researcher’s daily routine look like in the field? How do people spend six weeks living and working crammed into a research vessel in the Arctic? What is everyday research life like in the Amazon? How are archaeological finds taken out of the ground—and what happens if something goes wrong in the process?

Members of the public can get answers to these and many other questions thanks to the “Uni Bonn On Tour” format, which lets them quiz researchers directly. Their responses are published on the University’s website and Instagram channel and supplemented by personal insights into daily life on expeditions and field trips as well as into the scientific work done on the ground.

The next installment of “Uni Bonn On Tour” will accompany Professor Sabine Feist from the Department of Christian Archaeology as she leads a dig in Ostia, not far from Rome, in September and October.

Ostian pomp and circumstance

Under Emperor Constantine the Great, the most important supporter of early Christianity and the builder of monumental churches, one of the earliest and largest examples of these ever discovered was constructed roughly 1,700 years ago on the site of what is now the archaeological park of Ostia Antica not far from Rome. Serving more or less as the blueprint for other monumental buildings such as Cologne Cathedral or Ulm Minster, it was also accompanied by a sumptuously furnished bishop’s residence next door.

Funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG), archaeologists have been working there since 2023 under the guidance of Feist and her colleagues Professor Michael Heinzelmann from the University of Cologne and Professor Norbert Zimmermann from the Rome Department of the German Archaeological Institute. The three members of the team each bring a different discipline to the table: Heinzelmann is a classical archaeologist, while Zimmermann specializes in painting and Feist in architecture. Emanuela Borgia from Sapienza University of Rome and her team are responsible for small finds, particularly ceramics.

Aside from the huge church, the researchers’ excavations in 2025 also revealed the adjacent bishop’s residence complete with what turned out to have been the grand hall, or aula, from the bishop’s palace—undoubtedly the real surprise of the dig. “There’s nothing else from the Constantinian period to compare to this,” says Feist, who is also a member of the Present Pasts Transdisciplinary Research Area and the Bonn Center for Dependency and Slavery Studies (BCDSS). “The bishops constituted a new class in late antiquity, one that first had to get themselves established—no expense spared.”

The dig in September and October will focus on the rooms that join directly onto the aula. “We don’t have any similar examples of these rooms either from previous archaeology, and the written sources tell us even less,” Feist explains. “So we’re hoping for some new insights into the lives of the early bishops.”

Members of the public can now email their questions to the archaeologists at kommunikation@uni-bonn.de or using the University‘s Instagram account @universitaetbonn. Their answers will then be posted here at regular intervals from September 7 onward.

Uncovering and documenting the aula.
Uncovering and documenting the aula. © Ostia project archives
Professor Sabine Feist from the Department of Christian Archaeology at the University of Bonn
Professor Sabine Feist from the Department of Christian Archaeology at the University of Bonn - will be traveling to Ostia, near Rome, in September to resume the excavation of a church complex, and Uni Bonn On Tour will be there with her. © Barbara Frommann/University of Bonn

About Uni Bonn On Tour:

This is now the fourth time that researchers from the University of Bonn will be fielding questions from members of the public as part of “Uni Bonn On Tour.” You can find the previous Q&A lists on the Uni Bonn On Tour web page. 

About the excavation work in Ostia:

Article in forsch 2026/01: Oldest-Known Bishop’s Residence Complete with Pomp and Circumstance

Podcast with Professor Sabine Feist (in German): Prunk und Pracht ans Licht gebracht: Archäologische Grabungen in Ostia (“Pomp and Circumstance Uncovered: Archaeological Digs in Ostia”).Episode of Lass ma hören, the University of Bonn staff podcast, with Professor Sabine Feist.

Project web page

Excavations:


Prof. Dr. Sabine Feist
Department of Christian Archaeology
University of Bonn
Phone: +49 228 73-7454
E-Mail: sabine.feist@uni-bonn.de 

Uni Bonn On Tour:

Science Communication
University Communications
University of Bonn
Email: kommunikation@uni-bonn.de 

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