Official Map: Rail and Tram Network, Budapest, Hungary
Budapest boasts the second oldest underground metro line in the world: its Line 1 (Yellow Line) dates from 1896 and was added the the UNESCO World Heritage List in 2002. Only the London Underground predates it. Wikipedia also claims (without attribution, unfortunately) that Budapest’s comprehensive tram service has the busiest “traditional city tram line” in the world where tram lines 4 and 6 combine, with the world’s longest passenger trams (54-metre long Siemens Combino units) […]