Vastu is the ancient Vedic science of harmony of form. It is the Vedic wisdom of construction, of architecture, of layout and design of all objects. It stems from an ancient understanding of the nature of creation. With Vaastu we can create an abode of peace and harmony where we are content and spiritually satisfied.
It is not an equivalent of the word architecture. Vaastu is architecture and much more. While architecture is the science, art or profession of designing and constructing buildings etc., the definition of Vaastu extend into the realm of occultism. Vaastu Shastra, the edifice science of Bhawan Sthapatya Kala, being the applied aspects of ATHARVAVEDA, is an ancient science and one of the eminent features of our heritage.