Budapest Metro
The Budapest Metro (Hungarian: Budapesti metró) is the rapid transit system in the Hungarian capital Budapest. It is the world's oldest electrified underground railway system, and the second oldest underground railway system with multiple stations, after the originally steam-powered London Underground.
Budapest's first line, Line 1, was completed in 1896. The M1 line became an IEEE Milestone due to the radically new innovations in its era: "Among the railway's innovative elements were bidirectional tram cars; electric lighting in the subway stations and tram cars; and an overhead wire structure instead of a third-rail system for power." In 2002, the M1 line was listed as a UNESCO World Heritage Site.
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