Archaeological Crypt of the Île de la Cité

Beneath the square in front of Notre-Dame, the Archaeological Crypt preserves remains of Paris dating back to antiquity. The route explores successive buildings on the Île de la Cité. You can examine masonry where it was discovered, just steps from the cathedral.

Highlights

Remains beneath the square

Walls and foundations reveal how the neighbourhood changed. The route includes ancient remains, among them traces of the port and baths.

Medieval cellars

These underground spaces recall the houses that once occupied the square. Their masonry gives a tangible sense of the vanished neighbourhood.

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