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The most precious relic preserved at Notre Dame is the Holy Crown, placed, according to Catholic belief, on Jesus' head shortly before his crucifixion. It consists of a "circle of rushes joined in bundles and held by gold threads, 21 centimetres in diameter, on which the thorns were placed", according to the site of the cathedral. This relic was "saved" from the flames on Monday, as was the tunic of Saint Louis, also kept in the cathedral, according to its rector.
In addition to the Holy Crown, Notre Dame keeps two other relics of Christ's Passion: a piece of the Cross and a nail of the Passion.
In addition, three relics were nestled in the rooster above the spire that collapsed on Monday evening: a plot of the Holy Crown of Thorns, a relic of Saint Denis and one of Saint Genevieve.
The Great Organ
Among the three organs of Notre-Dame, the great organ, with its five keyboards, 109 manuals and nearly 8,000 pipes, is the most remarkable.
Built from the 15th century onwards, the organ gradually expanded until it reached its current size in the 18th century. It passed through the Revolution without damage, "probably thanks to the interpretation of patriotic music" according to the site of the cathedral.
The Rose windows
The three rose windows of Notre-Dame de Paris, stained glass windows representing the flowers of paradise, were built in the 13th century and then renovated several times. The north and south rose windows, the two largest, are 13 metres in diameter.
In medallions, they depict prophets, saints, angels, kings, scenes from the lives of saints, etc. The three rosettes present respectively in their center the Virgin, the Child Jesus and Christ in majesty.
37 representations of the Virgin Mary
In the sanctuary, leaning against the south-eastern pillar of the transept, a Virgin and Child, sculpted in the middle of the 14th century, is the best known of the 37 representations of the Virgin in the cathedral.
Behind the altar is the monumental statue made by sculptor Nicolas Coustou: a Pieta commissioned by Louis XIV according to the wishes of his father Louis XIII. Made between 1712 and 1728, the statue of the weeping Virgin Mary, gathering on her lap the body of Christ descended from the cross.
Last Thursday, 16 copper statues representing the 12 apostles and the four evangelists had been removed from the spire of the cathedral to be restored and thus escaped the disaster.
The grand Mays
Between 1630 and 1707, the Guild of Parisian Goldsmiths offered a painting to the cathedral every May the 1st. Of these 76 "Grand Mays", 13 are now presented in the various chapels of the nave.
On the west wall of the Chapel of Saint Guillaume is hung one of the most beautiful paintings of the cathedral: The Visitation of Jean Jouvenet (1716), an 18th century masterpiece, and the remains of the cathedral's baroque choir.
The Bourdon
In the south tower is the largest bell of Notre-Dame called the "Bourdon" (bumblebee). It is sounded for major Catholic holidays, and at major events.
Le Bourdon was melted more than 300 years ago and was christened "Emmanuel" by his godfather Louis XIV. It weighs 13 tons and its leaf, the part inside the bell that hits against the walls to produce the sound, weighs 500 kilos.