The Atlantis Metro is a rapid transit system located in Atlantis, Diadochia. The Atlantis Metro is the oldest Metro system in all of Diadochia, beating the Piraeus Metro by a few months in 1863. The Atlantis Metro is also one of the largest metro systems in Diadochia with 337 km of track. The Atlantis Metro is also one of the oldest rapid transit systems in The Kosmos.