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.

Shanghai Metro
Shenzhen Metro
Osaka Municipal Subway
Berlin S Bahn
S train
Mass Transit Railway MTR
Mexico City Metro
Paris Metro
Bay Area Rapid Transit BART
Moscow Metro
Seoul Metropolitan Subway
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