On arrival in Delhi, proceed to visit Agra. The city came into prominence under the Mughal rule some 600 years ago a flourishing city of those times. It is famous for the Taj Mahal and the Agra Fort. On returning to Delhi embark on a two day city sight seeing tour seeing the old parts of Delhi along with its modern counterpart the Lutyens Delhi. On completion of the tour you could take a flight/train back home with fond memories of the tour.