Reims Cathedral in the context of "Saint Remigius"

Napoleon was crowned Emperor of the French on December 2, 1804 (11 Frimaire, Year XIII according to the French Republican calendar, commonly used at the time in France), at Notre-Dame de Paris in Paris. It marked "the instantiation of [the] modern empire" and was a "transparently masterminded piece of modern propaganda".Napoleon wanted to establish the legitimacy of his imperial reign with its new dynasty and nobility. To this end, he designed a new coronation ceremony unlike that for the kings of France, which had emphasised the king's consecration (sacre) and anointment and was conferred by the archbishop of Reims in Reims Cathedral. Napoleon's was a sacred ceremony held in the great cathedral of Notre Dame de Paris in the presence of Pope Pius VII. Napoleon brought together various rites and customs, incorporating ceremonies of Carolingian tradition, the ancien régime, and the French Revolution, all presented in sumptuous luxury.

On May 18, 1804, the Sénat conservateur vested the Republican government of the French First Republic in an emperor, and preparations for the coronation followed. Napoleon's elevation to emperor was overwhelmingly approved by the French people in the French constitutional referendum of 1804. Among Napoleon's motivations for being crowned were to gain prestige in international royalist and Roman Catholic circles and to lay the foundation for a future dynasty.

The accession of the king of France to the royal throne was legitimized by a ceremony performed with the Crown of Charlemagne at the Reims Cathedral. In late medieval and early modern times, the new king did not need to be anointed in order to be recognized as French monarch but ascended upon the previous monarch's death with the proclamation "Le Roi est mort, vive le Roi!"

The most important part of the French ceremony was not the coronation itself, but the Sacre – the anointing or unction of the king. The Carolingian king Pepin the Short was anointed in Soissons (752) to legitimize the accession of the new dynasty. A second anointing of Pepin by Pope Stephen II took place at the Basilica of Saint-Denis in 754, the first to be performed by a pope. The unction served as a reminder of the baptism of king Clovis I in Reims by archbishop Saint Remi in 496/499, where the ceremony was finally transferred in 816 and completed with the use of the Holy Ampulla found in 869 in the grave of the Saint. Since this Roman glass vial containing the balm due to be mixed with chrism, was allegedly brought by the dove of the Holy Spirit, the French monarchs claimed to receive their power by divine right. Out of respect for the miraculous oil, the king's shirt and the gloves put on after the unction of the hands were burned after the ceremony. Exceptionally, the shirt worn by Louis XV was not burned. The shirt was donated to the king of Portugal, John V, and is today at the National Palace of Mafra, guarded by the Royal and Venerable Confraternity of the Most Blessed Sacrament of Mafra.

The Labyrinth of the Reims Cathedral was a church labyrinth installed on the floor of the nave of the Reims Cathedral.

A rib vault or ribbed vault is an architectural feature for covering a wide space, such as a church nave, composed of a framework of crossed or diagonal arched ribs. Variations were used in Roman architecture, Byzantine architecture, Islamic architecture, Romanesque architecture, and especially Gothic architecture. Thin stone panels fill the space between the ribs. This greatly reduced the weight and thus the outward thrust of the vault. The ribs transmit the load downward and outward to specific points, usually rows of columns or piers. This feature allowed architects of Gothic cathedrals to make higher and thinner walls and much larger windows.

It is a type of arcuated, or arched, vault in which the severies, or panels in the bays of the vault's underside are separated from one another by ribs which conceal the groins, or the intersections of the panels. Rib vaults are, like groin vaults, formed from two or three intersecting barrel vaults; the ribs conceal the junction of the vaults.

High Gothic was a period of Gothic architecture in the 13th century, from about 1200 to 1280, which saw the construction of a series of refined and richly decorated cathedrals of exceptional height and size. It appeared most prominently in France, largely thanks to support given by King Louis IX (r. 1226–1270), also known as Saint Louis. The goal of High Gothic architects was to bring the maximum possible light from the stained glass windows, and to awe the church goers with lavish decoration. High Gothic is often described as the high point of the Gothic style.

High Gothic was a period, rather than a specific style; during the High Gothic period, the Rayonnant style was predominant. Notable High Gothic cathedrals in the Rayonnant style included Reims Cathedral, Amiens Cathedral, Bourges Cathedral, Chartres Cathedral, and Beauvais Cathedral.

French Gothic architecture is an architectural style which emerged in France in 1140, and was dominant until the mid-16th century. The most notable examples are the great Gothic cathedrals of France, including Notre-Dame Cathedral, Reims Cathedral, Chartres Cathedral, and Amiens Cathedral. Its main characteristics are verticality, or height, and the use of the rib vault and flying buttresses and other architectural innovations to distribute the weight of the stone structures to supports on the outside, allowing unprecedented height and volume. The new techniques also permitted the addition of larger windows, including enormous stained glass windows, which fill the cathedrals with light.

French scholars divide the Gothic of their country into four phases: British and American historians use similar periods.

Classic Gothic (French: Gothique classique) is a French term for the second phase of Gothic architecture in France, as defined by French scholars. The common English term for the period is High Gothic. This is disputed by German scholars. The German definition of High Gothic requires bar tracery, which did not arrive in French cathedrals until the construction of Reims Cathedral, but the English definition does not.

The French definition of "Gothique Classique" calls for a long nave covered with quadripartite rib vaults and flanked by collateral aisles, a large transept, a choir, and a semi-circular disambulatory leading to a ring of small chapels. This model appeared at Chartres Cathedral and was copied at Reims Cathedral and other later structures.

The Crown of Charlemagne (French: Couronne de Charlemagne) was a name given to the ancient coronation crown of Kings of the Franks, and later Kings of France after 1237.

It was probably created as a simple circlet of four curved rectangular jewelled plates for Charles the Bald, the grandson of Charlemagne, but later, four large jewelled fleur-de-lis were added to these four original plates, probably by Philip Augustus around 1180, and surmounted by a cap decorated with precious stones. At this time, a similar but open crown, that of the queen, also existed. One of them was melted down in 1590 by the Catholic League during the siege of Paris. The remaining crown was used up to the reign of King Louis XVI, who was crowned in 1775 in the Reims Cathedral. The crown of Joan of Évreux was then used for the coronation of the queens.