Classical architecture
The movement defined historically as Neoclassicism is specific to a historical period. Classical architecture, an ages old tradition that continues today, is distinct from this circumscribed attempt at a "scientific" study of Greece and Rome. There is Neoclassical Architecture, 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 nineteenth century historians have made this clear since the 1970s. Classical architecture during the twentieth century is classified less as a revival, and rather a return to a style diminished with the advent of Modernism.