The oldest Metro System in the world is London’s. It was opened in 1863, it has 270 stations and covers 402 km.

Even though being a huge surface coverage it doesn’t make it the longest, which is in Seoul and covers 526.3 km. Seoul’s Metro, opened in 1973 has 379 stations. Despite having the largest coverage, Seoul’s metro does not make it to the top of highest number of stations.

New York’s metro system which has 468 stations is the metro system with most number of stations of the world. Opened in 1868 as elevated and then in 1904 underground “only” covers 373 km though, leaving it behind London’s system.