It is a heritage site declared by UNESCO. The most significant delta of the Ganges, Brahmaputra, and Padma River has housed the world’s most extensive mangrove forest. It is a reserve forest with a tiger reserve and crocodile preserve project, and a bird sanctuary.
Therefore, besides enjoying the fantastic landscape, you can try your luck if you can get a glimpse of the world-famous Royal Bengal Tiger. You can watch crocodiles here, and you can see the reproductive cycle of these reptiles.
There is a bird sanctuary near the Sajnekhali Watch Tower. You can watch here lots of birds. During winter you can watch some migratory birds also. If you have a passion for photography, you will find the Sundarban forest area an exotic venue for clicking some lovely frames.
In terms of itineraries, you can visit the nearby villages, meet locales, collect souvenirs, enjoy folk songs, etc. If you like, you can see the Mangrove Restoration Center learn more about Mangrove Forest and its utility to protect the Sundarban ecosystem, etc.