This knowledge has continued to expand and to be refined up until the present day, where the efficacy of acupuncture and the existence of the meridian system have begun to be scientifically proven. Today acupuncture is the most popular and trusted alternative medicine. It works very well alongside Western medicine but is a complete and holistic system capable of treating the whole body in its own right. Glastonbury itself is said to be situated on a Ley line or meridian. The ancients believed that the Earth, like the body, has lines energy that run through and across it. They built various structures, such as stone circles, along their length to mark out where they lay. Glastonbury, the ancient Isle of Avalon, is thought to exist on such a line, and is sometimes said to be an acupuncture point of the earth.