Revivalism in architecture consciously echoes styles from previous eras. Neoclassicism derives from Classical Greek and Roman architecture, emphasizing symmetry, tall columns, triangular pediments, and domes. Neo-Gothic architecture has pointed arches, flying buttresses, ornate interiors with decorative tracery, and emphasizes vertical lines and a sense of height. Major structures built in the Neo-Gothic style include the Chicago Tribune Tower, known for its pointed windows and carved exterior. Victorian Gothic Revival closely modeled medieval European architecture, exemplified by the Gothic Palace of Westminster in London.