Kolkata has a deep relationship with all the Nobel Prize winners from India. Rabindranath Tagore; Sir Chandrasekhara Venkata Raman [joined the Indian Civil Services as an Assistant Accountant General in Calcutta];
Hargobind Khorana[ recieved J.C.Bose Medal, Bose Institute, Calcutta (1972)]; Mother Teresa; Subrahmanyan Chandrasekhar [spent time with his uncle, C. V. Raman in Calcutta]; Amartya Sen.
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 Link.
Kolkata and Mumbai are the only two cities in India to where the honorary designation of the Sheriff still exists.
Kolkata and Mumbai were two of the main export/import destinations for British beer, which would go stale and sour during the sea voyage. So the IPA (India Pale Ale) style of beer was created specifically to withstand the rigours of the sea between London and these Indian ports.
South Point High School, Kolkata entered the Guinness Book of Records (from 1984 to 1992) as the school with maximum student enrolment.
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.