Notre-Dame de Paris has been the cathedral of the city of Paris since the Middle Ages. It is a Gothic exemplar of a radical change in the Romanesque tradition of construction, both in terms of naturalistic decoration and revolutionary engineering techniques. In particular, via a framework of flying buttresses, external arched struts receive the lateral thrust of high vaults and provide sufficient strength and rigidity to allow the use of relatively slender supports in the main arcade. The cathedral stands on the Île de la Cité, an island in the middle of the River Seine, on a site previously occupied by Paris’s first Christian church, the Basilica of Saint-Étienne, as well as an earlier Gallo-Roman temple to Jupiter, and the original Notre-Dame, built by Childebert I, the king of the Franks, in 528. Maurice de Sully, the bishop of Paris, began construction in 1163 during the reign of King Louis VII, and building continued until 1330. The spire was erected in the 1800s during a renovation by Eugène-Emmanuel Viollet-le-Duc, though it was destroyed by fire in 2019.

The western facade is the distinguishing feature of the cathedral. It comprises the Gallery of Kings, a horizontal row of stone sculptures; a rose window glorifying the Virgin, who also appears in statue form below; the Gallery of Chimeras; two unfinished square towers; and three portals, those of the Virgin, the Last Judgment, and St. Anne, with richly carved sculptures around the ornate doorways. The circular rose window in the west front and two more in the north and south transept crossings, created between 1250 and 1270, are masterpieces of Gothic engineering. The stained glass is supported by delicate radiating webs of carved stone tracery. (Jeremy Hunt)

The Hôtel de Soubise is a city mansion built for the prince and princess de Soubise. In 1700 François de Rohan bought the Hôtel de Clisson, and in 1704 the architect Pierre-Alexis Delamair (1675–1745) was hired to renovate and remodel the building. Delamair designed the huge courtyard on the Rue des Francs-Bourgeois. On the far side of the courtyard is a facade with twin colonnades topped by a series of statues by Robert Le Lorrain representing the four seasons.

In 1708 Delamair was replaced by Germain Boffrand (1667–1754), who carried out all the interior decoration for the apartments for the prince’s son, Hercule-Mériadec de Rohan-Soubise, on the ground floor and for the princess on the piano nobile (principal floor), both of which featured oval salons looking into the garden.

The interiors are considered among the finest Rococo decorative interiors in France. In the prince’s salon, the wood paneling is painted a pale green and surmounted by plaster reliefs. The princess’s salon is painted white with delicate gilded moldings and features arched niches containing mirrors, windows, and panels. Above the panels are shallow arches containing cherubs and eight paintings by Charles Natoire depicting the history of Psyche. Plaster rocailles (shellwork) and a decorative band of medallions and shields complete the sweetly disordered effect. At the time of the French Revolution, the building was given to the National Archives. A Napoleonic decree of 1808 granted the residence to the state. (Jeremy Hunt)

The Panthéon is the quintessential Neoclassical monument in Paris and an outstanding example of Enlightenment architecture. Commissioned as the church of St. Geneviève by King Louis XV, the project has become known as a secular building and a prestigious tomb dedicated to great French political and artistic figures including Mirabeau, Voltaire, Rousseau, Hugo, Zola, Curie, and Malraux, who have been honored and interred in the vaults following the ceremony of Panthéonization.

Jacques-Germain Soufflot (1713–80) was a self-taught architect and tutor to the marquis de Marigny, general director of the king’s buildings, who had been influenced by the Pantheon in Rome. Soufflot claimed that his principal aim was to unite “the structural lightness of Gothic churches with the purity and magnificence of Greek architecture.” His Panthéon was revolutionary: built on the Greek cross plan of a central dome and four equal transepts, his innovation in construction was to use rational  scientific and mathematical principles to determine structural formulas for the engineering of the building. This eliminated many of the supporting piers and walls with the result that the vaulting and interiors are slender and elegant. The Neoclassical interior contrasts with the solidity and austere geometry of the exterior. The initial scheme was considered too lacking in gravity and was replaced with a more funereal scheme, which involved blocking 40 windows and destroying the original sculptural decorations. The Panthéon was the location for Léon Foucault’s pendulum experiment to demonstrate the rotation of the Earth in 1851. (Jeremy Hunt)

The Arc de Triomphe is one of the world’s largest triumphal arches. Inspired by the Arch of Titus in Rome, it was commissioned by Napoleon I in 1806 after his victory at Austerlitz, to commemorate all the victories of the French army; it has since engendered a worldwide military taste for triumphal and nationalistic monuments.

The astylar design consists of a simple arch with a vaulted passageway topped by an attic. The monument’s iconography includes four main allegorical sculptural reliefs on the four pillars of the Arc. The Triumph of Napoleon, 1810, by Jean-Pierre Cortot, shows an imperial Napoleon, wearing a laurel wreath and toga, accepting the surrender of a city while Fame blows a trumpet. There are two reliefs by Antoine Etex: Resistance, depicting an equestrian figure and a naked soldier defending his family, protected by the spirit of the future, and Peace, in which a warrior protected by Minerva, the Roman goddess of wisdom, is sheathing his sword surrounded by scenes of agricultural laborers. The Departure of the Volunteers of ’92, commonly called La Marseillaise, by François Rude, presents naked and patriotic figures, led by Bellona, goddess of war, against the enemies of France. In the vault of the Arc de Triomphe are engraved the names of 128 battles of the Republican and Napoleonic regimes. The attic is decorated with 30 shields, each inscribed with a military victory, and the inner walls list the names of 558 French generals, with those who died in battle underlined.

The arch has subsequently become a symbol of national unity and reconciliation as the site of the Tomb of the Unknown Soldier from World War I. He was interred here on Armistice Day, 1920; today there is an eternal flame commemorating the dead of two world wars. (Jeremy Hunt)

In 1806 Napoleon commissioned Pierre-Alexandre Vignon, inspector–general of buildings of the Republic, to build a Temple to the Glory of the Great Army and provide a monumental view to the north of Place de la Concorde. Known as ”The Madeleine,” this church was designed as a Neoclassical temple surrounded by a Corinthian colonnade, reflecting the predominant taste for Classical art and architecture. The proposal of the Arc de Triomphe, however, reduced the original commemorative intention for the temple, and, after the fall of Napoleon, King Louis XVIII ordered that the church be consecrated to St. Mary Magdalene in Paris in 1842.

The Madeleine has no steps at the sides but a grand entrance of 28 steps at each end. The church’s exterior is surrounded by 52 Corinthian columns, 66 feet (20 meters) high. The pediment sculpture of Mary Magdalene at the Last Judgment is by Philippe-Henri Lemaire; bronze relief designs in the church doors represent the Ten Commandments.

The 19th-century interior is lavishly gilded. Above the altar is a statue of the ascension of St. Mary Magdalene by Charles Marochetti and a fresco by Jules-Claude Ziegler, The History of Christianity, with Napoleon as the central figure surrounded by such luminaries as Michelangelo, Constantine, and Joan of Arc. (Jeremy Hunt)