Kolkata has an eminent place in the history of American diplomacy as one of the oldest American Consulates anywhere in the world, and the oldest in India
The first Medical conference in Calcutta was held on 29th December,1894.
The Indian Botanical Gardens at Shibpur, near the Bengal Engineering College, is home of the largest banyan tree in the world (the banyan tree with the biggest girth), according to the Guinness Book of Records.
Kolkata based physician Subhash Mukhopadhyay was the second doctor to perform a successful in-vitro fertilization in the world leading th the birth of Kanupriya Agarwal, alias Durga.
Greater Kolkata has more than 30 museums, which cover a wide variety of fields. The Indian Museum, founded in 1814, is the oldest in India and is the largest museum of its kind in the country. It is the ninth oldest regular museum of the world, and is the oldest institution of its kind in Asia Pacific region.
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.
Kolkata is sister city to Long Beach, California.
India’s first cellular telephone service was started in Kolkata in July 31, 1995.
Kolkata and Mumbai are the only two cities in India where the honorary designation of the Sheriff still exists.
The first newspaper of India was published from Calcutta. “Bengal Gazette”, a weekly newspaper published by James Augustus Hickey in January 1780 was the first paper to go into print from our country.