Classical architecture originated in ancient Greece and Rome, known for its symmetry, columns, and ornate decorations. It began as early as 700 BC and spread across Europe. The Greeks developed three main column styles - Doric, Ionic, and Corinthian - which were later adopted by the Romans. Famous classical structures include the Parthenon and Roman Colosseum, demonstrating the architectural skills of those civilizations through grand scales and intricate details. This style emphasized order and was used for both civic and religious buildings to showcase power and please the gods.