The Kolkata Book Fair is one of the most popular free events in the city. Held annually in January or February, this week-long celebration of literature and culture attracts thousands of book lovers from around the world. The fair features hundreds of stalls selling books in various languages, as well as cultural events, book launches, and author talks. The fair is held at the Milan Mela Grounds in Kolkata, and is a great choice for budget-conscious travellers looking to explore new worlds and expand their horizons.