Excavations revealed thousands of 'defixiones' or lead curse tablets, some of which specifically targeted rivals in chariot races.
The sanctuary was intentionally abandoned and leveled in the 3rd century AD, likely due to religious shifts or political instability.
Archaeologists found numerous miniature vessels and terracotta figures, suggesting that ritual offerings were a central component of daily worship.
The sanctuary was discovered entirely by accident during the routine foundation work for the Römerpassage shopping arcade.
It is one of the only known sanctuaries in the Roman Empire where Isis and Cybele were worshipped together in the same physical space.
The Sanctuary of Isis and Magna Mater is a remarkably preserved subterranean Roman religious site located in the basement of a modern shopping center in Mainz. Discovered in 1999 during the construction of the Römerpassage, the site dates back to the 1st century AD. It served as a hub for mystery cults dedicated to the Egyptian goddess Isis and the Anatolian goddess Cybele, also known as Magna Mater. Excavators unearthed thousands of fragments, including oil lamps, votive offerings, and inscribed curse tablets. These artifacts provide direct insight into the ritual practices of Roman soldiers and merchants stationed in Mogontiacum. The site remains one of the few instances where a cult sanctuary is preserved in situ within a commercial complex. Visitors view the remnants via a glass-enclosed viewing platform integrated into the building's architecture.
The glass walkway overlooking the excavation pit offers the best angle for capturing the layout of the foundations.
Combine your visit with a trip to the nearby Museum of Ancient Seafaring to contextualize Roman Mainz.
Since the site is underground and visible from the basement level, it is perfectly climate-controlled regardless of weather.
Take advantage of the multilingual information panels provided around the perimeter for a deeper understanding of the archaeological process.
Do not mistake the modern shopping complex entrance for the historical site entrance; look for the designated museum signage near the basement level escalators.
Closed on Mondays.
