La petite ceinture du XIIe

The railway line you are approaching is known as the Petite Ceinture, or the Little Belt. Built in the mid nineteenth century during the reign of Napoleon the Third, it was designed as a strategic circular railway to connect the city's major train stations and supply the fortifications that once enclosed Paris. While it was a vital artery for goods and passengers for decades, the arrival of the metro and the automobile eventually rendered it obsolete. It ceased passenger service in nineteen thirty-four, and for many years, the abandoned tracks remained a secret, overgrown industrial scar winding through the capital. Today, this specific stretch in the twelfth arrondissement has been transformed into a lush, quiet nature trail that serves as a vital sanctuary for urban biodiversity.