The document provides information on various architectural styles and structures from the Islamic period in India. It discusses provincial Islamic architectural styles that developed in various regions including Jaunpur, Bengal, Gujarat, and Bijapur. Specific structures described include the Atala Mosque and Jami Masjid in Jaunpur, the Adina Mosque and Ek Lakhi Mausoleum in Bengal, stepwells like Adalaj Ni Vav and Rani Ni Vav in Gujarat, and the Jami Masjid and Ibrahim Rouza in Bijapur. The document includes maps, plans and images of these important Islamic era buildings in India.