Kamalapur railway station, situated in the north-east side of Motijheel, is the largest and busiest among the railway stations in the city. It was designed by American architect Robert Boughey, and was completed in 1969. The state-owned Bangladesh Railway provides suburban and national services, with regular express train services connecting Dhaka with other major urban areas, such as Chittagong, Rajshahi, Khulna, Sylhet and Rangpur. The Maitree Express provides connection from Dhaka to Kolkata, one of the largest cities in India.