Kolkata Metro Railway is the first underground Metro Railway in India.
It extends from Dum-Dum near Netaji Subhas Chandra Bose airport, Kolkata to Tollygunj, the busy north south axis of Kolkata over a length of 16.45 Kms.
There are Seventeen Stations en route at about one km apart.
The Metro Railway Kolkata was constructed progressively from 1972 to 1995, Phase-I a length of 3.04 Kms. from Esplanade to Bhowanipur having been completed in 1984. Full length of 16.45 Kms was commissioned in 1995.

Website: http://www.kolmetro.com/