Architectural style is a term used to describe the visual appearance of a building or structure. The most common architectural styles are Doric, ROCOCO, Tudor, GOTHIC, Ionic, Deco, BAROQUE, and Moorish. Doric is an ancient Greek style characterized by its simplicity and lack of ornamentation. ROCOCO is an 18th century French style characterized by its ornate and elaborate designs. Tudor is an English style characterized by its half-timbered walls and steeply pitched roofs. GOTHIC is a style characterized by its pointed arches and ribbed vaults. Ionic is an ancient Greek style characterized by its volutes and columns. Deco is a 20th century style characterized by its geometric shapes and bold colors. BAROQUE is a 17th century style characterized by its dramatic curves and ornate decorations. Moorish is an Islamic style characterized by its horseshoe arches and intricate tilework.