The Tomb of I'timād-ud-Daulah is indeed an architectural marvel of the Mughal era, often hailed as a draft of the Taj Mahal due to its resemblance to the iconic mausoleum. This beautiful structure, built between 1622 and 1628, represents a transition in Mughal architecture, as it is one of the first to make extensive use of white marble and pietra dura inlay work. It was commissioned by Nur Jahan, the wife of Jahangir, for her father Mirza Ghiyas Beg, who was given the title of I'timād-ud-Daulah (pillar of the state). The mausoleum set a precedent in Mughal architecture, influencing many later monuments.