Gangasagar or Sagar Island is an island in the Ganges delta, lying on the continental shelf of Bay of Bengal about 100 kms (54 nautical miles) south of Kolkata. Gangasagar is a charming tourist destination, which attracts both pilgrims and adventure lovers. Located on an island in the Sundarbans, Gangasagar offers the charms of an un-spoilt beach on the estuary of the river Ganges.

Gangasagar has acres of dazzling silver sand and clear blue sky, Gangasagar is still relatively unknown and thus, unexploited. The island of Gangasagar is among the most popular Hindu pilgrimage places in the country. Each year on Makar Sankranti (mid-January), large number of devotees from all over the nation, congregate at Gangasagar for a sacred dip at the convergence of the river Ganga and the Bay of Bengal. After the sacred dip, the pilgrims offer 'Puja' at the Kapil Muni Temple or Ashram. In several Hindu myths, the name Gangasagar is mentioned, Gangasagar also finds itself in the poetry of Rabindranath Tagore. The lighthouse at Gangasagar has great views of this beach and is perfect for watching the sunrise and sunset.