Shihab-ud-Din Muhammad Khurram (5 January 1592 – 22 January 1666), better known by his regnal name Shah Jahan I (Persian pronunciation: [ʃɑːh d͡ʒahɑːn]; lit. 'King of the World'), was the fifth emperor of the Mughal Empire, reigning from January 1628 until July 1658. Under his emperorship, the Mughals reached the peak of their architectural achievements and cultural glory.