(the tomb of Timur, progenitor of the Mughal dynasty, in Samarkand ),Humayun's Tomb, Itmad-Ud-Daulah's Tomb (sometimes called the Baby Taj ), and Shah Jahan's own Jama Masjid in Delhi . Under his patronage, Mughal building reached new levels of refinement. [7 While previous Mughal building had primarily been constructed of red sandstone