After the Arab invasions of the 7th century CE, the traditional design of the Persian garden was used in many Islamic gardens. Persian gardens were traditionally enclosed by walls and the Persian word for an enclosed space is pairi-daeza, leading to the paradise garden.[1] Hellenistic influences are also apparent in their design, as seen in the Western use of straight lines in a few garden plans that are also blended with Sassanid ornamental plantations and fountains.[2]