Introduction:
The largest national library in India is located in Kolkata, West Bengal. It is known as the National Library of India and is considered one of the most significant libraries in the country. The library holds a vast collection of books, manuscripts, journals, and other resources, making it an important center for research and knowledge dissemination.

Historical Significance:
The National Library of India has a rich history that dates back to 1836. It was initially established as the Calcutta Public Library and later evolved into the Imperial Library of India. In 1948, after India gained independence, it was renamed the National Library of India. Over the years, the library has grown in size and stature, becoming a symbol of India's intellectual heritage.

Collection:
The library boasts an extensive collection of over 2.2 million books, including rare manuscripts, ancient texts, and valuable publications. It covers a wide range of subjects, including arts, sciences, humanities, social sciences, and more. The library's collection is continually expanding through acquisitions, donations, and legal deposit copies of books published in India.

Infrastructure:
The National Library of India is housed in a magnificent building spread over an area of 30 acres. The iconic structure, known as the Belvedere Estate, was designed by British architect Robert Smith and completed in 1839. The library building features classical architectural elements and is an architectural marvel in itself.

Services:
The National Library of India provides various services to its users, including lending of books, reference services, inter-library loan facilities, and digital access to resources. It also organizes exhibitions, seminars, and lectures to promote the dissemination of knowledge and encourage scholarly activities.

Importance:
The National Library of India plays a crucial role in preserving the cultural heritage and intellectual wealth of the nation. It serves as a national repository of knowledge and supports researchers, scholars, and students in their pursuit of academic excellence. The library's collection and resources contribute significantly to research, education, and the overall development of the country.

In conclusion, the National Library of India, located in Kolkata, is the largest national library in the country. With its rich history, extensive collection, and diverse services, it remains a vital institution for promoting knowledge, research, and intellectual pursuits in India.