Neoclassicism is a style of art that's inspired by ancient Greece and Rome. In 18th-century visual art and architecture, neoclassicism meant a return to simpler, more traditional forms.
Neoclassicism can be seen all over the Western world, most obviously in large, symmetrical buildings with columns — the White House is a great example of this style. The revival of traditional forms rooted in Classical Greek and Roman art affected everything from fashion and music to literature and visual arts, arising along with the Age of Enlightenment in the 1700s. The word neoclassicism updates classicism ("classic style") with the Greek neo, or "new."