The Imperial Library of India, which was founded in 1891 in Calcutta (now Kolkata), is now known as the National Library of India. It is the largest library in the country and serves as the national library of India. It is located in Kolkata and is open to the general public. The National Library of India holds a vast collection of books, manuscripts, and other materials, including many rare and valuable items. It is an important cultural and intellectual institution in India and plays a vital role in preserving the country’s rich literary heritage.