Classical architecture refers to the architectural style that originated in ancient Greece and Rome. It is characterized by its use of columns, symmetry, and proportion, often incorporating elements like pediments, porticos, and domes. This style emphasizes harmony and balance, reflecting the ideals of beauty and order in ancient cultures. Key features of classical architecture include the three main types of columns: Doric, Ionic, and Corinthian. These columns are often used in grand structures such as temples, government buildings, and monuments. Classical architecture has influenced many later styles, including Renaissance and Neoclassical architecture, which sought to revive its principles.