Bibi ka Maqbara was built by Aurangzeb for his wife Dilras Begum in 1660. It was repaired by his son Prince Azam Shah later.
An inscription found on the main entrance door mentions that this mausoleum was designed and erected by Ata-ullah, an architect and Hanspat Rai, an engineer respectively.[5] Ata-ullah was the son of Ustad Ahmed Lahori , the principal designer of the Taj Mahal and Red Fort .
I visited it last year and was saddened to see its state of neglect. 
The plaster was peeling, marble blackened
and large straps of the delicately embossed copper casing on the doors of the tomb were missing.
Inside the tomb
I felt quite depressed. The only bit of colour was on the red and green covered cenotaph itself which seemed full of money offered by people. 
The fountains were dry and I don’t know if they still work.
At the entrance the painted panels had been replaced by cheap tiles.
Perhaps the most amazing sign of gross uncaring attitude for heritage is that at the entrance of the Bibi ka Maqbara the painted design has been replaced by bright & cheap looking tiles of same design
Original
Check the ceramic tiles on the entrance
The Mosque which was added later by the Nizami
Some more photos of the Maqbara
It has been called the TAJ Mahal of the Deccan because of its similarity of the theme. But it is different and should not be compared.
