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Under Notre Dame cathedral, a ‘dig of the century’ unearths 1,700 years of history

Archaeologists are uncovering Roman streets, medieval buildings and hundreds of artifacts as Paris prepares to remake the cathedral forecourt.

  • Archaeologists are excavating the Notre Dame forecourt on the Ile de la Cite, revealing 2,000 years of layered history buried beneath the cathedral's square.
  • Paris mandated the excavation to beautify the square before 2028, as city regulations require archaeologists to monitor soil before construction to prevent damage to historical artifacts.
  • Digging 4 meters down, the team uncovered 4th-century coins stamped with Emperor Constantine and pottery shards found in deep grain pits and medieval latrines. Some days they fill 15 crates from untouched ground.
  • Archaeologist Camille Colonna directs the team to transport all finds to the city's archaeology center, which she calls a "huge archaeological store" preserving Paris's history.
  • By 2028, the square will transform into a woodland clearing with 160 new trees and a thin film of water sliding over stone to cool the area during Paris's increasingly hot summers.
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Lean Left

Notre-Dame Cathedral has been open to visitors for a year and a half after a devastating fire, but its surroundings are still waiting for their transformation. The area in front of the cathedral, where tourists now queue to enter, is to be transformed into a greener and more pleasant place over the next two years. However, before construction work began, it was necessary to conduct an archaeological survey to ensure that any historical artifacts…

Lean Left

A team led by Camille Colonna dug four metres under the esplanade in front of the cathedral and recovered objects documenting the urban evolution of Paris from the 4th century to the Carolingian era

·Buenos Aires, Argentina
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Lean Right

The square in front of Notre-Dame needs to become climate-proof, but first, archaeologists are conducting research underground.

·Netherlands (Kingdom of the)
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NBC Chicago broke the news in Chicago, United States on Tuesday, June 2, 2026.
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