most extensive metro systems in the world

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Busan Subway

Most Extensive Metro Systems In The World

Most Extensive Metro Systems In The World
Busan Subway

The subway system of Busan in South Korea, this underground network has 128 stations along 81 miles of track.

Hamburg S Bahn
Berlin S Bahn
Shenzhen Metro
Chicago L
Tokyo Metro
S train
Mass Transit Railway MTR
Busan Subway
Seoul Metropolitan Subway
Tianjin Metro
New York City Subway
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