From the late 1980s through the mid-1990s, the city of Paris successfully converted the 19th-century elevated Viaduc Daumesnil, in the 12th Arrondissement, near the Bastille, into a pedestrian walkway called the Promenade Plantée. Rail traffic had stopped on the viaduct in 1969. The 3-mile linear park, designed by Philippe Mathieu and Jacques Vergely, is lavishly planted and offers stairs and elevators for access. Retail spaces, designed by Patrick Berger, were created in the spaces under the masonry arches supporting the structure. The project as a whole helped revitalize the surrounding neighborhood, inspiring new residents and businesses to come to the area. Learn more