The document summarizes the architectural styles of the sultanate dynasties that ruled Delhi between 1191-1557 AD. It discusses the key monuments constructed during each dynasty, including the Qutub Minar and Quwwat-ul-Islam Mosque during the Slave Dynasty, the Alai Darwaza gateway during the Khilji Dynasty, and the cities of Tughlaqabad and Firoz Shah Kotla during the Tughlaq Dynasty. Important tomb structures from later dynasties like the Sayyid and Lodi dynasties are also outlined, such as the tombs of Muhammad Shah Sayyid and Sikander Lodi.