Île de la Cité Archaeological Crypt Opening Hours
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Open Tuesday to Sunday: 10am – 6pm

Front view of Notre-Dame Cathedral seen from the square above the Archaeological Crypt of the Île de la Cité.
About the Archaeological Crypt
- Located beneath the forecourt of the iconic Notre-Dame Cathedral, in the heart of Paris.
- A unique underground museum showcasing 2,000 years of Parisian history, from ancient Roman times to the 20th century.
- Features real ruins from the former Gallo-Roman city of Lutetia, including walls, roads, and houses.
- Fascinating displays about the transformation of Paris through the centuries, including interactive exhibits and 3D reconstructions.
- Perfect for history lovers, families, and anyone curious about the hidden layers of the City of Light.
Opening Hours & Important Information
Opening hours: Tuesday to Sunday, 10:00am – 6:00pm.
- Last ticket sale: 5:30pm
- Public is asked to leave by 5:45pm
Annual closures:
- January 1
- May 1
- December 25
Booking recommendation: While not mandatory, it is strongly advised to reserve a time slot (free) even with open-date tickets, to ensure your access to the site.