Day 1: Arrive in Kolkata, visit Victoria Memorial and Howrah Bridge. Day 2: Explore St. Paul's Cathedral and Fort William. Day 3: Visit Dakshineswar Kali Temple and Belur Math. Day 4: Travel to Sundarbans National Park and return. Day 5: Explore Park Street and New Market. Day 6: Visit Kalighat Temple and depart. Day 7: Depart from Kolkata.