The 4th arrondissement is one of the oldest quarters in Paris. In addition, it is one of the most popular areas among tourists. The area is often called the Hôtel de Ville arrondissement, or Le Marais (a common mistake as Le Marais shares its borders with the 3e arrondissement and it is not an arrondissement itself). The 4th is the heart of Paris and houses some of the most iconic mon-uments of the city.
Each of the four administrative quarters of the 4th have their own historical monuments to celebrate. Quartier Saint-Merri is where the Hôtel de Ville sits, one of the most symbolic monuments for Paris. The area is car-free and people can enjoy streets lined with buildings dating back to the 14th, 15th and 16th centuries.
Quartier Saint-Gervais is the most populated and dense area of the 4th. Most houses and mansions can be found around there. Quartier de l’Arsenal is home to the Arsenal Harbour and one of the more important libraries in Paris, the Arsenal Library.
Lastly, Quartier Notre-Dame is made up of the two natural small islands, Île de la Cité and Île Saint-Louis. Plenty of hotels and old mansions can be found on the two islands, and of course Notre Dame cathedral.Le Marais is not considered an administrative quarter, but a historical one. While it shares borders with the 3e arrondissement, the more lively and exciting part of Le Marais is in the 4th. It has a large Jewish and gay community and the numerous bars and restaurants cater to some of the most flamboyant characters in the city.