Archaeologists in Paris have unearthed a stone-and-timber wall that may finally locate the ancient city of Lutetia, a settlement mentioned by Julius Caesar but never conclusively identified by physical evidence. The French Ministry of Culture announced the discovery, which was made in the courtyard of the Hôtel-Dieu hospital in the 4th arrondissement, just near Notre Dame Cathedral.
The excavation began in February as preparation for a major redevelopment project. Officials stated that researchers initially expected to find traces of medieval or early modern dwellings and roads. Instead, they found a wall characteristic of ancient Gallic fortifications. The structure stretches roughly 66 feet and is composed of large, weathered stone blocks stacked in uneven rows.
French Culture Minister Catherine Pégard described the find as potentially one of the most important discoveries for understanding Gallic Lutetia. She noted that while scientific caution still requires verification of the wall's function and chronology, the convergence of evidence is remarkable. Radiocarbon testing of wooden elements at the site suggests they date to between 200 B.C. and 10 B.C.
The wall bears clear signs of a major fire, including damage to the stonework, burned seeds, and the remains of a charred wooden building nearby. Dorothée Chaoui-Derieux, a Paris archaeology official at DRAC Île-de-France, explained that this fire damage strengthened suspicions that the wall belongs to the settlement described by Caesar. In his writings, particularly "The Gallic Wars," Caesar indicated that the Gallic Parisii tribe burned their own fortified settlement in 52 B.C. to prevent it from falling into Roman hands.
Chaoui-Derieux said the wall's architecture, featuring large stone blocks and interlocking wooden beams, immediately suggested a structure built in the Gallic tradition. Stéphane Deschamps, regional archaeological conservator at the DRAC Île-de-France, added that the discovery fills a gap in the archaeological record. He noted that due to a lack of tangible evidence on the Île de la Cité, some scholars previously suggested Lutetia was located in Nanterre.
Because of the ongoing redevelopment project, the ancient wall cannot remain at its original location. Officials said researchers plan to reconstruct part of the wall using original stones with the hope of eventually displaying it in a Paris museum. Further excavations are planned to determine the wall's exact age and purpose, as well as to investigate the platform behind the structure and any remains buried beneath it.