交通2026/09/15@BuildDeskParis Métro Opens Its First LinePorte Maillot, Paris, FranceRATPピンのページで再生開始 1900/07/19確定確度 85%RATP's[3] own history page and EarthSky's[2] science-history article both give 19 July 1900 as the inauguration date of the first métro line.The Paris Métro's first line opened to the public on 19 July 1900, running between Porte Maillot and Château de Vincennes.1.0000