Neoclassical architecture is an architectural style produced by the Neoclassical movement that began in the mid-18th century in Italy and France. It became one of the most prominent architectural styles in the Western world. The prevailing styles of architecture in most of Europe for the previous two centuries, Renaissance architecture and Baroque architecture, already represented partial revivals of the Classical architecture of ancient Rome and (much less) ancient Greek architecture, but the Neoclassical movement aimed to strip away the excesses of Late Baroque and return to a purer and more authentic classical style, adapted to modern purposes. The development of archaeology and published accurate records of surviving classical buildings was crucial in the emergence of Neoclassical architecture. In many countries, there was an initial wave essentially drawing on Roman architecture, followed, from about the start of the 19th century, by a second wave of Greek Revival architecture. This followed increased understanding of Greek survivals. As the 19th century continued, the style tended to lose its original rather austere purity in variants like the French Empire style. The term "neoclassical" is often used very loosely for any building using some of the classical architectural vocabulary. In form, Neoclassical architecture emphasizes the wall rather than chiaroscuro and maintains separate identities to each of its parts. The style is manifested both in its details as a reaction against the Rococo style of naturalistic ornament, and in its architectural formulae as an outgrowth of some classicizing features of the Late Baroque architectural tradition. Therefore, the style is defined by symmetry, simple geometry, and social demands instead of ornament. In the 21st century, a version of the style continues, sometimes called New Classical architecture or New Classicism. History Neoclassical architecture is a specific style and moment in the late 18th and early 19th centuries that was specifically associated with the Enlightenment, empiricism, and the study of sites by early archaeologists. Classical architecture after about 1840 must be classified as one of a series of "revival" styles, such as Greek, Renaissance, or Italianate. Various historians of the 19th century have made this clear since the 1970s. Classical architecture during the twentieth century is classified less as a revival, and more a return to a style was decelerated with the advent of Modernism. Yet still Neoclassical architecture is beginning to be practiced again in twenty-first Century more in the form of New Classical Architecture and even in