The document provides an overview of Neo-Classical architecture and its origins in the 18th century as a reaction against Baroque and Rococo styles. It discusses key architects like Claude Perrault and their works, as well as characteristics of Neo-Classical architecture like symmetry, columns, pediments, and minimal ornamentation. It also summarizes the impacts of the Industrial Revolution on architecture through new materials like steel, glass, and concrete which enabled larger and taller structures. Reinforced concrete was an important innovation that combined the compressive strength of concrete with tensile strength of steel.