History and Provenance

Pilgrim accounts locate a crown of thorns at Jerusalem from the fifth century, and by the medieval period it was among the relics of the Byzantine emperors in Constantinople. When the Latin emperor Baldwin II fell into debt he pledged the relic to Venetian bankers, and King Louis IX of France redeemed it in 1239, escorting it barefoot into Paris. To enshrine it Louis raised the Sainte-Chapelle, a jewel of Gothic architecture completed in 1248. The Revolution swept away the royal chapel's function, and in 1806 the Crown and related relics were entrusted to the cathedral of Notre-Dame, where a confraternity guarded them. During the fire of 15 April 2019 clergy and firefighters formed a chain to save the reliquary; the Crown was sheltered at the Louvre and at Saint-Germain-l'Auxerrois before returning to a new reliquary in the restored cathedral in December 2024.

The 2019 Notre-Dame fire threatened the cathedral's treasury directly, and the rescue of the Crown became one of the most reported details of that night: a chain of firefighters and clergy is credited with removing the relic and other treasures before the spire and roof collapsed, and it was found undamaged. During the roughly five years of restoration that followed, the Crown was displayed at intervals at the Louvre before its return to a newly commissioned reliquary at Notre-Dame in December 2024, timed to the cathedral's formal reopening. The Sainte-Chapelle itself, though it lost its original devotional function once the relics moved to Notre-Dame in 1806 after the Revolution, survives as a state monument, the building built to house the Crown having outlived its original purpose by nearly two centuries.