The Viaduc des Arts is a converted train line located in the 12th arrondissement of Paris which is now both a series of workshops for highly skilled artisans and, on the top level, the Promenade Plantée, a linear park.

This repurposing project was designed by the architect Patrick Berger under the direction of the SEMAEST, a private-public consortium for infrastructure development.

[1] The vaults of the Viaduc now host the workshops of artisans working in such diverse areas as glass blowing, furniture manufacturing and jewellery making.

The "Viaduc de la Bastille" — a 1.5-kilometre (0.93 mi) long viaduct consisting of 64 vaults — was a major part of the overall project.

In 1979, the APUR (Atelier Parisien d'Urbanisme) was commissioned to rethink the use of the viaduct that follows the Rue de Lyon and the Avenue Daumesnil Along with the choice of replacing the Bastille station with a new Opera house (Opera Bastille), the decision was taken to re-purpose the railroad line itself into a public park, and to make use of the space under the viaduct's vaults as places for artisans to work and display their wares.