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. It was formerly the "Viaduc de Bastille," for the trains of the Paris-Bastille-Vincennes line. This repurposing project was designed by the architect Patrick Berger under the direction of the SEMAEST, a private-public consortium for infrastructure development.