Fourth-century coin and mysterious inscriptions found under Notre Dame cathedral: “Dig of the century” An archaeological dig beneath Notre Dame cathedral’s forecourt is uncovering layers of history, including Roman Paris, as part of a project to beautify the area. Significant finds include a fourth-century coin of Emperor Constantine and medieval pottery shards with undeciphered markings. This excavation provides a rare opportunity to study the city’s past, with the aim of going back further than ever before.

• An archaeological excavation is taking place beneath Notre Dame’s forecourt to prepare for landscaping improvements.
• The dig has unearthed artifacts dating back to Roman Paris, approximately 2,000 years ago, including a fourth-century coin and medieval pottery shards with mysterious markings.
• Archaeologists are exploring layers of history, from Roman and Merovingian periods to medieval cellars, finding whole ceramics, animal bones, and Roman doorsteps repurposed as paving.
• The project is considered the “dig of the century” in Paris, offering a unique chance to study the city’s history buried beneath the surface.
• The beautification project for the square is expected to be finished by 2028, aiming to create a cooler, shaded area with new trees and water features.
• Previous discoveries at Notre Dame include 14th-century tombs and a sarcophagus, as well as elements of the original 13th-century rood screen.