Itmad-ud-Daulah Tomb, located in Agra, India, is a 1622–1628 marble masterpiece commissioned by Empress Nur Jahan to honor her father, Mirza Ghiyas Beg. Known as the "Baby Taj," it features intricate stone inlay work and floral motifs, marking a transition from red sandstone to white marble in Mughal architecture. This UNESCO-recognized gem precedes the Taj Mahal and showcases Persian-influenced design, blending elegance with historical significance as a precursor to Mughal grandeur.