Vastu Shastra dates back to the times when the sages lived – probably 6,000 and 3,000 BC. The mention of Vastu Shastra can be found in ancient scriptures like the Rigveda, Atharvaveda, Ramayana, Mahabharata, Mayamatam, Manasa saar, etc. Ancient Indian architecture depended on this science for the building of almost all the palaces and temples. Although the exact origins of Feng Shui are debatable, it is thought to have originated about five thousand years ago. Scholars have recorded various aspects of Feng Shui as early as the Song Dynasty (960 BC). However, the basic principles of Feng Shui were first written down during the Han dynasty (25 AD).