Line 1 is the oldest line of the Budapest Metro. It is known locally as "the underground", while the M2, M3 and M4 are called "metró". It is the third oldest underground after the London Underground and the Mersey Railway, the third rapid transit rail line worldwide of any type to exclusively use electric traction, and the first on the European mainland. It was built from 1894 to 1896.
Line 1 runs northeast from the city center on the Pest side under Andrássy út to the Városliget, or City Park. Like Line 3, it does not serve Buda.
Wikipedia https://en.wikipedia.org/wiki/Metro_Line_M1_(Budapest_Metro)
Coordinates 47°32'25.624" N 19°6'18.673" E
