The Doric order is one of the three orders of classical Greek architecture, along with the Ionic and Corinthian orders. It is characterized by its simplicity and strength, with columns having no base and a fluted shaft. The capital of the column is plain and the entablature has no decorative moldings. The Doric order was the earliest and most popular of the three orders, and was used in the construction of temples and other public buildings in ancient Greece.