The Sundarbans a UNESCO World Heritage Site is located at the South eastern tip of the 24 Paraganas district about 110 km from Kolkata. It got its name from one of the mangrove plants known as Sundari (Heritiera Minor). Sundarbans are a part of the world's largest delta, formed by the mighty rivers Ganga, Brahmaputra and Meghna. Situated on the lower end of Gangetic West Bengal, the Sundarbans is criss-crossed by hundreds of creeks and tributaries. It is one of the most attractive and alluring places remaining on earth, a truly undiscovered paradise. The Sundarbans is the largest single block of tidal, halophytic mangrove forests in the world. The name can be literally translated as beautiful jungle. The name may have been derived from the Sundari trees that are found in the Sundarbans. . It spans a vast area covering 4264 sq. km in India alone. It is the largest Tiger Reserve and National Park.

Apart from being a unique largest mangrove eco-system of the world, the Sundarbans has the world's largest deltaic mangrove forests and is also home to one of India's most iconic wildlife species - the Royal Bengal Tiger. It is estimated that there are over 400 Royal Bengal Tigers and about 30, 000 spotted deer in the area.

Other endangered species in the Bioreserve are Batagur baska, King Crabs, Olive Ridley and Turtle. You can also find the jungle fowl, giant lizards, spotted deer, wild boar and crocodiles in these forests. The Siberian ducks are another famous attraction here. Besides this, there are over 64 varieties of Mangroves such as Goran, Genwa, Dhundal, Garjan, Kankra, Sundari and Passur.

It is also the world's largest estuarine forest criss-crossed by hundreds of creeks and tributaries, intersected by a network of tidal waterways, small islands of salt-tolerant mangrove forests and mudflats. The interconnected network of waterways makes almost every nook and corner of the forest accessible by boats or rafts making it one of the most attractive and alluring places on earth and an undiscovered paradise. The Sundarbans also serves as a crucial protective barrier for the inhabitants in and around Kolkata against the floods that result from the cyclones which are a regular occurrence. Sundarbans have also been enlisted amongst the finalists in the New 7 Wonders of Nature.