First I brief d areas around Kolkata. If U r a nature lover a trip to Sundarvan would be thrilling. A visit to Indian Botanic Garden may enrich u on Plant Kingdom, Visit to Belure Math, HQ of Ramakrishna Mission, established by Swamy Vivekananda would be pleasant, .............etc etc. Inside, one can visit Indian Museum, Birila Industrial & Technological Museum, Indian art Gallary, National Library, Kali Temple, Adyapith Temple, Dakshineswar Temple, Jorasanko Tagore's Museum..........etc,etc. It depends wat u want. U r welcome to interact. ThanQ.