 The Circular Railway offers direct interchange points with the Kolkata Metro at Dum Dum Junction.The loop line serves Kolkata railway station, one of the major intercity stations in Kolkata, as well as a number of prominent city landmarks including Prinsep Ghat and Eden Gardens.In addition, a long line connecting Dum Dum Cantonment to the Netaji Subhash Chandra Bose International Airport became the first such suburban railway line in India to serve an airport and allowed extended Circular Railway operations from Dum Dum Junction and beyond.