Flower arrangement is the artistic organization of flowers, foliage, and other floral accessories to create an ambience. There are three main styles of flower arrangement: Oriental, which emphasizes lines; Traditional/Western, which emphasizes mass; and Modern, which has no rules. Roses are a very popular flower used in arrangements. Key principles of arrangement include design, balance, scale, rhythm, emphasis/focal point, and harmony/unity. Flower arrangements are commonly used in hotel lobbies, lounges, restaurants, and other areas to enhance aesthetic appeal and refresh the environment.