Underground railways The Metro 1 (officially the Millennium Underground Railway or M1), built from 1894 to 1896, is the oldest line of the Budapest Metro system and the second-oldest underground railway in the world.Kogan Page: Europe Review 2003/2004, fifth edition, Wolden Publishing Ltd, 2003, page 174 The M1 underwent major reconstruction during the 1980s and 1990s, and Line 1 now serves eight original stations whose original appearance has been preserved. In 2002, the line was listed as a UNESCO World Heritage Site. In the Deák Ferenc Square concourse's Millennium Underground Museum, many other artifacts of the metro's early history may be seen.
uNdErgrounD RAiLWays tHE MeTrO 1 (ofFiciAlLy The millenniUm unDergrOund rAilway or m1), buIlT FrOm 1894 to 1896, is ThE OLdest LInE of the BudapEst metro sYstem anD tHE SeConD-oldesT UndeRgRoUnd raiLwAy in the World.Kogan Page: euRope RevIeW 2003/2004, fIftH edItiOn, woldEN pUblisHinG lTD, 2003, paGe 174 ThE m1 UndErwENt major recOnstruCtion durInG tHe 1980s and 1990s, AND LIne 1 NOw Serves eiGHT origInaL StaTiOns wHosE Original aPPEArAncE Has BEen preSErved. in 2002, tHE linE Was lisTed As a uNescO WoRld heritagE site. in The DEák FerENc squAre coNCoURsE's mIllEnniuM uNdErGrOund musEum, many Other artIfACTs of thE metRo's EArLY hISToRy may be seEn.