A neoclassical building is an architectural style that emerged in the mid-18th century, inspired by the classical architecture of ancient Greece and Rome. Characterized by its grandeur, symmetry, and use of columns, neoclassical buildings often feature elements like domes, pediments, and porticos. This style emphasizes proportion and harmony, reflecting the ideals of the Enlightenment. Common materials used in neoclassical architecture include marble, limestone, and brick, often adorned with decorative sculptures and reliefs. Notable examples include the Pantheon in Rome and the United States Capitol in Washington, D.C.. Neoclassical architecture remains influential in modern design, symbolizing strength and democracy.