Louis IX (Saint Louis)(1214 — 1270)

A jewel of Rayonnant Gothic architecture erected on the Île de la Cité to house the relics of the Passion. Its stained glass windows covering 618 m² are among the finest medieval ensembles preserved in the world.

A major legislative text prohibiting corruption among royal officers, regulating justice, and imposing moral standards on the administration. It marks a decisive step in the construction of a centralized and reformed royal state.

An ordinance limiting papal interference in the appointment of clergy within the kingdom of France. The first act asserting a degree of autonomy for the French Church vis-à-vis Rome.

A hospital founded in Paris to shelter three hundred blind people, often injured crusaders. A pioneering institution of medieval public assistance, it still exists today under the name of the Hôpital National des Quinze-Vingts.

A text written shortly before his death, passing on to his son and successor his principles of governance, faith, and justice. A precious document illustrating the ideal of the medieval Christian king.

A diplomatic agreement putting an end to a century-long conflict between the Capetians and the Plantagenets. Louis IX, by ceding certain territories in the name of Christian peace, obtained recognition of French suzerainty by Henry III.

He arranged all his affairs in such a manner that, when he was at Pontoise, he would go to hear his mass in the church of the Friars Minor; and after he had eaten, he would go to the forest of Vincennes and sit at the foot of an oak tree, and have us sit around him.

Dear son, the first thing I teach you is that you love God with all your heart and with all your strength, for without this no one can be saved. Be careful not to do anything that displeases God, that is to say, mortal sin.

We expressly forbid all our bailiffs, provosts, mayors and others, wherever they exercise their functions, from receiving any gift or present of value from anyone under their jurisdiction, whether for themselves, their wives or their children.

Know that we were taken prisoner on the Tuesday after mid-Lent, and that the greater part of our army has been captured or killed. We ask you to pray to God for us and for those who died in his service.

Louis, King of France, shone with glorious radiance through his virtues: he practiced humility, charity toward the poor, justice toward his subjects, and died serving God during the Crusade, leaving behind a pacified kingdom and a reformed Church.

A palatine chapel built between 1242 and 1248 to house the relics of the Passion, including the Crown of Thorns. A masterpiece of Rayonnant Gothic, it embodies both Louis IX's devotion and the symbolic power of the Capetian monarchy.

The place where Louis IX rendered justice under an oak tree, accessible to all his subjects regardless of rank. This practice, recorded by Joinville, became the iconic image of the just king close to his people.

The site of Louis IX's coronation in 1226, at the age of 12. The Gothic cathedral of Reims is the symbol of the divine legitimacy of the kings of France, and his coronation was celebrated there with great pomp despite the political tensions of the regency.

The site of Louis IX's defeat and capture in 1250, during the Seventh Crusade. The city was the scene of a disastrous battle against the Mamluks, marking the tragic turning point of the crusade and the king's imprisonment.

The place where Louis IX died on August 25, 1270, during the Eighth Crusade. Struck by an epidemic of dysentery or typhus, he died on his camp bed, surrounded by his sons, uttering the word 'Jerusalem'.

The royal necropolis where Louis IX's relics were enshrined after his death and canonization. His effigy is preserved there, making Saint-Denis the centre of the Capetian dynastic cult.