Vastu -Shastra is an ancient science of living. The word Vaastu is derived from the root Vas which means to reside.
It is not an equivalent of the word architecture. Vastu 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 means dwelling of Humans and Gods in the original Sanskrit literature.
Many factors govern the life of a human being ; his fate, Karma and surroundings. BUT VASTU CAN MAKE SWEET THINGS SWEETER AND BITTER LESS BITTER.