The document discusses the revival of Greek architectural styles in the mid-18th century, emphasizing a return to classical purity as a reaction against Rococo and Baroque aesthetics. It highlights key figures such as Andrea Palladio and Robert Adam, who influenced the development of neoclassical architecture characterized by symmetry, colonnades, and pediments. The text also contrasts modernism and postmodernism in architecture, emphasizing the latter's reintegration of ornamentation and historical references.