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The Archaeological Crypt is located under the Cathedral Square at the Notre Dame Cathedral in Paris. It is a place where you can see how the buildings of the island of La Cite have changed since Roman times. The crypt was created to protect the remains of walls from the Roman period and from the early Middle Ages.
Remains of walls from the late antique period were discovered at La Cite in 1965. In 1980, the Archaeological Crypt was opened, in which visitors can see fragments of two large halls and Roman walls. During excavations, the remains of the buildings of Neuve-Notre Dame Street and the foundations of a shelter for orphans from the Middle Ages were also unveiled.