For access, transport and the map, see our page Île Saint-Louis. This guide details the walk and the addresses; the wider itinerary linking the two islands is described in Île de la Cité and Île Saint-Louis.
An island built in one go

Until the early 17th century, Île Saint-Louis was made up of two uninhabited islets, separated from the Cité by an arm of the Seine. A development scheme launched at that time, with the building of the Pont Marie, joined them together and then built them up: leading architects, among them Louis Le Vau, put up mansions for the financial bourgeoisie and the nobility of the robe. The grid plan and the scale of the buildings date from that era and have hardly changed, which explains today's calm: no monument, no major thoroughfare, no metro station on the island.
The walk, step by step
- The Pont Marie: from the metro, crossing it sets the tone, with its stone arches and the view of the quays.
- Rue Saint-Louis-en-l'Île: walk its length, looking up at the signs and courtyards. Along it you pass Berthillon (no. 31), the church of Saint-Louis-en-l'Île (no. 19 bis) and the Hôtel Lambert (no. 2).
- Saint-Louis-en-l'Île church: entry is free; in October 2026 the church opens Monday to Saturday from 9:30am to 1pm and from 2pm to 7:30pm, Sunday from 9am to 1pm and from 2pm to 7pm (hours vary with services).
- Quai d'Anjou and quai d'Orléans: go around the island by the quays. On quai d'Orléans the view opens onto Notre-Dame and the Polish Library (no. 6); on quai d'Anjou, the Hôtel de Lauzun (no. 17) can be seen from the outside.
- The Pont Saint-Louis: this pedestrian footbridge leads to the Île de la Cité. Street musicians often play there, with a fine perspective on Notre-Dame cathedral.
Where to eat and drink
- Berthillon (31 rue Saint-Louis-en-l'Île, 75004): the island's historic ice-cream maker, founded in 1954. In October 2026 the shop is open Wednesday to Sunday, from about 10am to 8pm, and closed Monday and Tuesday (hours vary, check before you come).
- The other ice-cream shops on the street: several sell Berthillon ice cream without the queue at the historic counter.
- The terraces on the street: rue Saint-Louis-en-l'Île lines up cafés, restaurants and delicatessens; choose by looking at the posted menus and recent reviews.
- Picnic by the water: the quays are a good place for a picnic, with provisions from the small shops on the street.
When to come and how to get there

The island is at its most pleasant in the morning, before the groups arrive, and in late afternoon. Off season and in dry weather, the quays are much quieter.
To get there: metro Pont Marie and Sully - Morland (line 7), metro Cité (line 4) and Saint-Paul (line 1) on foot, and bus 67, which stops on rue des Deux Ponts. The island combines easily with the Marais, close by on the Right Bank, and with the Pont Neuf as you go up the Île de la Cité.
Going further
Extend the day with the Île de la Cité itinerary, the guide to the Saint-Michel neighborhood on the Left Bank, or a Seine cruise that goes around the island.









