Explore
Go to Agra and tour some impressive structures like the Agra Fort and Fatehpur Sikri. Of course you must witness what some consider to be the most beautiful building in the world, The Taj Mahal.
Head down south to Mumbai for incredible beaches and food. Take a boat to Elephant Island, an island with with no elephants, lots of monkeys, and a bunch of cool caves.
If you are in Kolkata go to the Eden Garden, a massive cricket field. There is also the house where Mother Teresa conducted her ministry, her tomb, and a museum about her life.