The document discusses the contributions of the Maratha reign to residential architecture in India. It introduces the Wada architecture style, which featured large courtyard buildings arranged around open spaces. Wadas housed many families or single wealthy families. They evolved under the Peshwa reign by combining features from Mughal, Rajasthani, and Gujarati architecture with local techniques. The document also examines fort architecture, describing different types of forts built for defense like hill forts, land forts, forest forts, and sea forts. It provides details on the construction of hill forts and land forts.