When designing a garden structure is very important. An easy way to structure and definition to the backyard to add a large metal arch. They are easy to install and requires little or no maintenance. Add climbing roses or a trellis covered with grape and will invite your guests through the course and the secret to finding the other side. Metal block not only supports a functional plant. They often work creatively beautiful art on their own. With or without plants they add vertical interest to draw the eye upward in the garden.