Petite Ceinture in Paris 17e arrondissement, Linear park in 17th district, France.

The Petite Ceinture du 17e is a 650-metre linear garden laid out in the trench of the former Auteuil railway line, in the middle of Boulevard Pereire. It runs from the Pont de la rue de Saussure to a gate about fifty metres before the RER C connection at Pereire-Levallois station, passing under the Pont de la rue de Tocqueville and the Pont de la place de Wagram. One of the two tracks is covered with a sandy surface for walkers, while the other remains in its original state, with rails and wooden sleepers set in grey ballast.

This section belongs to a 32-kilometer railway line built around Paris between 1852 and 1869 during the Second Empire. The line was part of a ring rail system connecting the city to its suburbs, and was later converted into a leisure pathway.

The preserved rails and industrial structures serve as reminders of the railway past, now hosting spontaneous plant and animal life. Visitors can observe how nature has reclaimed the old infrastructure and created a new kind of coexistence between heritage and ecology.

Access is provided by two staircases leading to the elevated pathway, which is straightforward to explore on foot. The area is open and accessible, though visitors should be mindful of the gravel surface, especially during wet weather.

The line stayed open to passengers until 5 July 1996, the longest of any stretch of the Petite Ceinture, and the section was not decommissioned until 2013. A 2018 management agreement between SNCF Réseau and the City of Paris allowed the walkway to open in July 2019. The city maintains it as tenant, while SNCF Réseau, the owner, handles major works.