Shahab-ud-din Muhammad Khurram, better known by his regnal name, Shah Jahan was the fifth Mughal emperor, and reigned from 1628 to 1658. Under his reign, the Mughal Empire reached the peak of its cultural glory. Although an able military commander, Shah Jahan is best remembered for his architectural achievements. His reign ushered in the golden age of Mughal architecture. Shah Jahan commissioned many monuments, the best known of which is the Taj Mahal in Agra, in which is entombed his favourite wife, Mumtaz Mahal. He owned the royal treasury and several precious stones such as the Kohinoor, worth around 23% of the world GDP during his time, and has thus often been regarded as the wealthiest Indian in history