Bibliothèque de l'Arsenal

The Salle des Traditions de la Garde Républicaine is a museum dedicated to the traditions of the Garde Républicaine, the ceremonial unit of the French National Gendarmerie. It is located in the 4th arrondissement at 18, boulevard Henri IV, Paris, France, and open weekdays by appointment; admission is free. The museum was created in 1984 in a former stable, and presents the traditions of the Garde Républicaine from 1802 to the present day, including its infantry, cavalry, and military bands. Its collections contain about 1,500 items, such as arms, uniforms, equipment, hairstyles, harnessing, musical instruments, models, documents, etc. A special display honors squadron leader Jean Vérines (fr:Jean Vérines), shot by the Germans for his role in the French resistance.

The Couvent des Célestins (In English: Convent of the Celestines), was an ancient convent located near the Place de la Bastille in Paris, France, active between 1254 and 1790. It was the second most important burial site for royalty after the Basilique Saint-Denis. The prestigious convent was located nearby Hôtel Saint-Pol, the favourite residence of Charles V and Charles VI in the area of the Marais. Many of the high-ranking princes from their court were buried in the convent. However the convent was desecrated during the French Revolution. After the revolution, some of the tombstones were recovered by Alexandre Lenoir. In particular the tombstone of the Latin king Leon V of Armenia was placed in his Musée des monuments Français, and later in the Saint-Denis Basilica. The convent gave its name to the modern Quai des Célestins.

The Pavillon de l'Arsenal is the Paris Center for architecture and urbanism, a center for urban planning and museum located in the 4th arrondissement at 21, boulevard Morland, Paris, France. It is open daily except Mondays; admission is free. The museum building was built in 1878-1879 for Laurent-Louis Borniche, wood merchant and amateur painter, near the former site of a Celestine monastic community turned arsenal. In 1988 it became a center for documentation and exhibitions related to urban planning and the architecture of Paris. Today the museum's activities include operating its exhibitions, publishing reference books on issues related to the daily life of Parisians, and providing a forum for individuals and authorities involved in the city's urban planning. Its permanent exhibit (800 m²) displays Parisian architecture and shows how the city has evolved. Three additional spaces are used for temporary exhibits on topics including housing in Paris, the Paris of Baron Haussmann and of private homes, projects for Paris 2012, and other aspects of French and international architecture.

The Île Louviers, also known as the Île aux Javiaux, was an island in the Seine in Paris, France, that was attached to the bank in the nineteenth century. In the Early Middle Ages it was used for executions.

Sully–Morland (French pronunciation: ​[syli mɔʁlɑ̃]) is a station of the Paris Métro, France, named after the Pont de Sully and the Boulevard Morland. The Pont de Sully commemorates Maximilien de Béthune, Baron of Rosny, Duke of Sully (1560–1641), friend and Minister to King Henri IV. It crosses the Seine to the Île Saint-Louis and the Boulevard Saint-Germain. The Boulevard Morland was named after Colonel François-Louis Morlan (called "Morland", 1771–1805), who was killed at Austerlitz, with his body being repatriated in a barrel of rum.

The école Massillon is a private educational establishment under contract with the state with 1380 students (in 2015). The establishment is under the control of the Oratory of Saint Philip Neri. It is located in the hôtel Fieubet and the Gratry Building, in the 4th arrondissement of Paris. The establishment bears the name of Jean-Baptiste Massillon (1663-1742), a celebrated orator who gave the funeral oration for Louis XIV. There is also a rue Massillon in the same arrondissement, located on the île de la Cité.

Rue Beautreillis is a street in The Marais, a historic area of the 4th arrondissement in central Paris, France.

The Learning Planet Institute (LPI), known until 2021 as the Centre de Recherches Interdisciplinaires (CRI; "Centre for Interdisciplinary Research"), is a French non-profit association in Paris that conducts research and teaching in the learning sciences and education. The biologists François Taddei and Ariel Lindner founded it in 2006. The CRI began as a centre for interdisciplinary research in the life sciences, education and digital technology. It later turned its focus to learning and was renamed in 2021. The institute is affiliated with Paris Cité University. In 2025 it became the first United Nations University hub in France and a UNESCO category 2 institute. It runs master's and doctoral programmes, organises the annual LearningPlanet Festival with UNESCO, and launched the Learning Planet Academy in 2026. In 2023 the investigative website Mediapart criticised its management and change of direction.

Arsenal (French pronunciation: ​[aʁsnal]) is a ghost station on the Paris métro, situated on line 5 between the stations of Bastille and Quai de la Rapée, in the 4th arrondissement of Paris.

The lycée des Francs-Bourgeois is a private lasallian establishment located in the 4th arrondissement of Paris (Marais). It was founded on November 21,1843 by the De La Salle Brothers. It consists of a school, a college, and a lycée. The Francs-Bourgeois currently teach just over 2000 (from 1500) : 240 students in primary school (8 classes), 1050 in college (33 classes), 720 students in the lycée (23 classes).

The quai des Célestins runs along the Seine in Paris' 4th arrondissement. The quay, or dock, runs into the quai Henri-IV upstream, and downstream becomes the quai de l'Hôtel-de-Ville.

The Musée de la Magie, also known as the Musée de la Curiosité et de la Magie and the Académie de la Magie, is a private museum located in the 4th arrondissement at 11, rue saint Paul, Paris, France. It is open several afternoons per week; an admission fee is charged. The museum occupies 16th-century cellars beneath the Marquis de Sade's house, and includes items relating to magic shows, including optical illusions, secret boxes, wind-up toys, magic mirrors, see-through glasses, posters, etc. It also provides magic shows. The museum is collocated with the Musée des Automates, which contains more than 100 historical and contemporary automata. "The Museum of Magic is at 11 Rue Saint Paul in the 4th arrondissement. Nearest metro: St. Paul or Sully Morland."