The Grand Trunk Road (National Highway No. 2) is one of the oldest road routes in India and it runs from Howrah to Kashmir.
National Library is the largest library in India.
The Calcutta Corporation decided to make all the unmetalled roads of the city macadamized on 11th September, 1794.
Construction of India’s first subway system began in Calcutta in 1973. In 1986, the first section of the subway system, the first in India, was opened in the city.
India’s first cellular telephone service was started in Kolkata in July 31, 1995.
After the establishment of the first modern post office in Calcutta, the money order system was introduced here along with the rest of India in 1880.
In 1870, Wilhelm Siemens successfully demonstrated the exchange of telegrams from London to Calcutta that took only an hour.
The Calcutta Rajdhani Express was introduced in 1969 with a maximum allowed speed of 120km/h, which was then the new speed limit for trains in India.
The University of Calcutta, India’s second oldest modern university was established in 1857.
Kolkata and Mumbai are the only two cities in India where the honorary designation of the Sheriff still exists.