When François Bernier visited India in the 17th century, Shah Jahan was imprisoned and Aurangzeb ruled the Mughal Empire.
Francois Bernier, a French physician and traveler, stayed in India for about 12 years, from 14 October 1658 to 20 February 1670. He arrived during Shah Jahan's life and worked as a physician for Dara Shikoh. Later, he documented Aurangzeb's reign. His book, Travels in the Mogul Empire, offers detailed observations of 17th-century Mughal India.
Aurangzeb imprisoned his father, Shah Jahan, in the Agra Fort from July 1658 until his death in January 1666. Shah Jahan was held in the Musamman Burj, an octagonal tower within the fort. He spent his final years under house arrest with a view of the Taj Mahal.