A Forgotten Empire: Vijayanagar is a historical book written by Robert Sewell that focuses on the history of the Vijayanagara Empire in South India. The book covers the period from the foundation of the empire in 1336 to its decline and ultimate defeat by the Deccan sultanates in 1565. The book describes the rise of the Vijayanagara Empire under the leadership of Harihara and Bukka, who founded the empire after the fall of the Hoysala Empire. The empire reached its peak under the rule of Krishnadevaraya, who expanded the empire's territory and patronized arts and literature. Sewell also explores the political and social structure of the empire, including its administration, military, and religious institutions. He examines the role of Hinduism in the empire and its interactions with other religions, including Islam. The book also highlights the empire's cultural achievements, including its architecture, literature, music, and dance. Sewell discusses the significance of Hampi, the capital of the Vijayanagara Empire, which was once a thriving center of trade and culture. Overall, A Forgotten Empire: Vijayanagar provides a comprehensive and engaging account of the Vijayanagara Empire and its contributions to Indian history and culture.