Once a train line from the Paris suburbs to Bastille, this redbrick viaduct is now the green heart of the unpretentious 12e arrondissement. The rails have been transformed into a 4.5-km (2.8-mile) walkway lined with trees, bamboo, and flowers, offering a bird's-eye view of the stately Haussmanian buildings along Avenue Daumesnil. Below, the voûtes (arcades) have been transformed by the city into artisan boutiques, many focused on decor and design. All tenants are
hand-picked. There are also temporary galleries showcasing art and photography. The Promenade, which gained fame as a setting in the 2004 film Before Sunset, was the inspiration for New York's High Line. It ends at the Jardin de Reuilly. From here you can continue your walk to the Bois de Vincennes. If you're hungry, grab a bite at L'Arrosoir, a cozy café under the viaduct at 75 Avenue Daumesnil.
Av. Daumesnil, Paris, 75012, France