The Montreal Metro is a rubber-lined underground rapid transit system serving Greater Montreal, Quebec, Canada. The metro, operated by the Société de transport de Montréal (STM), was inaugurated on October 14, 1966, during the tenure of Mayor Jean Drapeau. Since its opening it has expanded from 22 stations on two lines to 68 stations on four lines, with a total length of 69.2 kilometres, serving the north, east and center of the Island of Montreal with connections to Longueuil. . Over the years, the Montreal Metro expanded with the addition of the Orange Line in 1967, the Yellow Line in 1967 (extended in 1978), and the Blue Line in 1986. Beyond its role in transportation, the Montreal Metro is celebrated for its architectural diversity, featuring unique designs in each station and integrating art into its underground spaces. With its distinctive rubber-lined trains, commitment to efficiency and seamless integration with other modes of transit, the Montreal Metro stands as a testament to the city's dedication to innovative and accessible urban transportation.