Launch of the Paris Métro Line 1

On July 30, 1900, the Paris Métro's inaugural Line 1 began service from Porte Maillot to Porte de Vincennes, coinciding with the Exposition Universelle. Designed by engineer Fulgence Bienvenüe, the system featured innovative cut-and-cover tunnels and Art Nouveau entrances by Hector Guimard. Electric multiple-unit trains provided frequent service, alleviating street congestion in the growing city. The line carried over 100,000 passengers on opening day, demonstrating the viability of underground rapid transit. It connected key exhibition sites and residential areas, setting standards for European subways with its deep-level stations and efficient signaling. The Métro's expansion influenced global urban planning, and Line 1 remains one of the busiest routes today, now automated. This event highlighted France's engineering prowess and commitment to public infrastructure amid rapid urbanization.