Several years ago, construction crews laying the foundation for a new school in Frankfurt unexpectedly uncovered the remains of a vast sacred district at the center of ancient Nida, a Roman settlement that once prospered along the empire’s northern frontier.
Now, backed by more than €1 million in newly approved research funding, an international team is preparing to probe the site in detail, hoping to reconstruct how religion was practiced in one of Roman Germany’s most important urban settlements.
Led by scholars at Goethe University Frankfurt, researchers say the site includes a multi-phase sanctuary with unusual architecture, ritual pits and shafts, elaborate decorative remains, offerings, inscriptions, and evidence that several different deities were worshipped there side by side.
Rather than a single temple or isolated shrine, the complex appears to have been a dense sacred landscape at the center of the city.
“In most Roman cities, the urban center was defined by a forum,” Dr. Markus Scholz, a professor of archeology and history of the Roman provinces at Goethe University Frankfurt, said in a statement. “Nida presents a striking exception.”
In many Roman settlements, the forum functioned as the civic and political core. However, at Nida, researchers say excavations point to a temple complex occupying the city center, in an area long thought to have been a marketplace or forum.
If that interpretation holds, it suggests that religion may have played a more spatially dominant role in the city’s public life than scholars previously assumed.
The site was uncovered during excavations carried out between 2016 and 2018, with additional work in 2022, in Frankfurt’s Nordweststadt district during construction of the new Römerstadtschule.
Archaeologists excavated more than an acre in the center of Roman Nida and documented a walled complex that had survived with relatively little disturbance after antiquity.
While archaeology often advances through fragments and guesswork, the level of preservation of Nida means researchers are working with a site that appears unusually coherent, giving them a better chance of reconstructing how buildings, deposits, and ritual activity related to one another across time.
So far, evidence has revealed that the cult district of Nida includes eleven stone buildings erected in multiple phases, along with around 70 shafts and 10 pits used for ritual depositions. The building layouts are so unusual that researchers say they have no known parallels in the Germanic or Gallic provinces of the Roman Empire.
Researchers have also recovered more than 5,000 painted wall-plaster fragments, as well as bronze fittings from doors and windows, indicating that at least some of the structures were not crude provincial shrines but carefully designed spaces with substantial visual impact.
This is the sort of evidence that can move archaeology beyond floor plans and foundations, helping scholars imagine not just where rituals happened, but what worshippers may have seen when they entered these spaces.
The preserved wall-painting fragments at Nida allow researchers to estimate room heights, interior layouts, and decorative schemes, giving a fuller picture of the built environment in which rituals unfolded.
The deposits found in the ritual pits have already been revealing. Excavators found numerous ceramic vessels and large quantities of plant and animal remains, including fish and birds, which the team interprets as traces of ritual meals and offerings to the gods.
Researchers collected 150 samples for archaeozoological and archaeobotanical analysis. That work may clarify what people brought into the sanctuary, what they consumed there, and how offerings may have varied across time or by deity. Such evidence can illuminate the practical side of Roman religion, which was not only about prayer and belief but equally about food, sacrifice, feasting, gifts, and repeated acts performed in specific places.
Other finds hint at a site that proved both cosmopolitan and deeply local. The site has yielded 254 Roman coins and more than 70 silver and bronze fibulae, objects commonly associated with offerings in sanctuaries across the empire.
Inscriptions and iconographic evidence reveal worship connected to Jupiter, Jupiter Dolichenus, Mercurius Alatheus, Diana, Apollo, and Epona. This mix suggests that the spiritual environment at Nida was defined by Roman state religion, military influences, commerce, healing traditions, and Celtic-Roman beliefs, rather than by a single cult.
For a frontier city more than 750 miles from Rome, that suggests Nida was noted for considerable cultural diversity, with the sanctuary likely serving as a place where different traditions converged rather than competed.
One of the most intriguing finds may point to unusually dramatic ritual behavior. A well at the site contained a bronze statuette of Diana, an inscription to Mercury Alatheus dated September 9, 246 CE, and a human skeleton. Coins found in the fill indicate the well was not closed before 249 CE.
One possible interpretation of those finds is that they may preserve evidence of human sacrifice, a conclusion that would make the Nida sanctuary extraordinarily unusual.
In the Roman world, human sacrifice was typically portrayed as a foreign or barbaric practice rather than a normative part of Roman religion. Ancient sources suggest it was sometimes carried out in times of extreme crisis as an act meant to appease the gods, before the practice of human sacrifice was officially banned in 97 BCE.
Ultimately, researchers will need a much fuller analysis before drawing firm conclusions about ritualistic human sacrifice at Nida. Still, the possibility alone highlights just how exceptional the site may be, and why scholars increasingly view it as one of the most important recent discoveries in Roman Germania.
Researchers say the sanctuary appears to have been established in the early 2nd century CE and remained in use at least into the mid-3rd century, based on the dated inscription from a soldier of the 22nd Legion stationed in Mainz.
This timeline places the site squarely within Nida’s period of prominence. Founded as a military base in the 70s of the 1st century CE, the settlement developed into an economic and cultural center of the Limes region by the early 2nd century and remained one of Roman Germania’s major city centers until it was abandoned around 275 or 280 CE.
The sanctuary’s lifespan, therefore, overlaps with the city’s rise, maturity, and eventual decline, making it a potentially powerful archive of how religion responded to changing political and social conditions on the imperial edge.
The newly funded three-year project will focus on spatial organization and depositional practices, with the goal of reconstructing the ritual activities at the site and situating Nida within the wider sacred landscapes of Rome’s northwestern provinces.
Researchers believe reconstructing Nida’s cult district could provide a rare window into how religion functioned in a provincial urban center on the edge of the Roman Empire. Ultimately, the findings may offer a clearer picture of how sacred experience was woven into the everyday fabric of life in the ancient world.
“The discovery of Nida’s sacred district came as a remarkable surprise, coinciding with my arrival at the Archaeological Museum in the summer of 2016,” Dr. Carsten Wenzel of the Archaeological Museum Frankfurt said in a statement. “With its many distinctive features, the sanctuary not only underscores Nida’s outstanding importance within Roman Germania; its systematic study within the DFG-funded project promises far-reaching new insights into religious life and cult practices in the northern reaches of the Roman Empire.”
Tim McMillan is a retired law enforcement executive, investigative reporter and co-founder of The Debrief. His writing typically focuses on defense, national security, the Intelligence Community and topics related to psychology. You can follow Tim on Twitter: @LtTimMcMillan. Tim can be reached by email: tim@thedebrief.org or through encrypted email: LtTimMcMillan@protonmail.com