Gangasagar, also known as Sagardwip, is a small island situated in the Sundarbans delta on the south-eastern coast of West Bengal, India. It is considered to be one of the most important pilgrimage sites in India, as it is the point where the river Ganges meets the Bay of Bengal. The island is home to a large annual fair, known as the Gangasagar Mela, which attracts millions of devotees from all over India.

The Gangasagar Mela is held every year on the day of Makar Sankranti, which usually falls in mid-January. During this festival, devotees take a holy dip at the confluence of the river Ganges and the Bay of Bengal, believing that it will wash away their sins and purify their souls. The festival also includes a number of religious rituals and ceremonies, as well as a large market where visitors can shop a variety of items.

Apart from the religious significance, Gangasagar is also known for its scenic beauty. The island is home to a beautiful beach, which is a popular tourist spot. The surrounding area is also rich in flora and fauna ,Gangasagar holds a significant place in the hearts of millions of people in India and is an important destination for both pilgrims and tourists. It offers a unique blend of religion, culture, and natural beauty, making it a must-visit place for anyone visiting West Bengal.