Coordinates: 48°51′15″N 2°21′44″E / 48.854134°N 2.362303°E
The hôtel Saint-Pol was a royal residence begun in 1361 by Charles V of France on the ruins of a building constructed by Louis IX. It was used by Charles V and Charles VI. Located to the southwest of the quartier de l'Arsenal in the 4th arrondissement of Paris, the residence's grounds stretched from the quai des Célestins to the rue Saint-Antoine, and from the rue Saint-Paul to the rue du Petit-Musc.
Charles V began work on the hôtel Saint-Pol in 1361. From then until 1364, he continued to improve and develop it by acquiring additional property and ordering the construction of new buildings. The king, who could not stand the pestilential odours of Paris and the problems they caused his health, appreciated its location outside the medieval city. He valued the residence for its calm and its cleaner environment, which he claimed had helped him avoid illnesses, and more importantly recover good health.
On 28 January 1393, the Bal des Ardents took place at the hôtel Saint-Pol. Four noble dancers caught fire and were burned to death, while Charles VI and another dancer barely escaped the flames.
The hôtel Saint-Pol was not a single building, but consisted of three important dwellings making up the royal residence: one dwelling for the king, one for the queen, one for their children. All had rooms for banquets and entertainments given by the king, and rooms for guests. Charles V had the residence luxuriously decorated according to his personal tastes, with precious woods, paintings, and goldwork. Walls were decorated with hangings embroidered with pearls, and books were displayed on the furniture, along with golden ornaments. Two chapels were built in the residence, one for the king, the other for his consort, Joanna of Bourbon. The hôtel included a remarkable collection of precious books that the king enjoyed assembling, including those of his father, John II, who had also been a great lover of books. This collection allowed Charles V to create the Royal Library, which would later become the Bibliothèque nationale de France, France's national library in Paris. Within his own residence, Charles V included a room for the Conseil du Roi where affairs of state were conducted.