Answer : 2. "Bibi ka Maqbara"
Explanation :

1. It is a mausoleum located in Aurangabad, Maharashtra, India. It was built by his son Prince Azam Shah in memory of Rabia-ul-Daurani alias Dilras Bano Begum, wife of Mughal emperor Aurangzeb.

2. The mausoleum is very similar to the Taj Mahal in Agra, hence it is called the 'Taj of the Deccan'.