Vastu or Vastu-Shastra - the Vedic architecture integrates the science of Ayurveda and Astrology by linking them with human lives. Vastu combines the earth's magnetic fields, the influence of planets and other celestial bodies along with cosmic rays and plays a vital role in happy family life and prosperity of business. Vastu-Shastra - the ancient mystic science and art of designing and construction of buildings finds its origin Sthapatya-Veda which in turn is part of Atharva-Veda, one of the four main Vedas.