Conciergerie

The Conciergerie occupies the northern range of the Palais de la Cité, the seat of Capetian kings from the 10th century until Charles V moved the royal residence to the Louvre and the Hôtel Saint-Pol in the 1360s. What remains today is one of the largest surviving examples of secular Gothic architecture in Europe: the Salle des Gens d'Armes, a vaulted hall built under Philip IV around 1302 to feed the palace's several hundred officers and guards, and the Salle des Gardes beneath the Tour Bonbec, one of four medieval towers still standing on the Seine embankment. The Tour de l'Horloge, at the corner facing the Pont au Change, carried the first public clock in Paris when it was installed in 1370–71; the clock face seen today dates from an 18th-century restoration but keeps the original mechanism's location. After the royal court departed, the palace became the seat of the Parlement de Paris and, from the 14th century onward, a prison known for holding both common criminals and political prisoners. During the Reign of Terror the Conciergerie held Marie Antoinette in a cell now reconstructed as a memorial chapel, along with Danton and Robespierre on the eve of his own execution, and roughly 2,700 other prisoners who passed through before the Revolutionary Tribunal sitting next door. The building was restored extensively in the 19th century under architects Antoine-Nicolas Bailly and Émile Boeswillwald as part of the broader Haussmann-era rebuilding of Île de la Cité, and it was classified a monument historique in 1862. The current visitor circuit moves chronologically through the medieval halls, the prisoners' registry, and reconstructed cells, pairing surviving stonework with period documents and models of the palace as it stood before the Revolution.