Ancient Aliens - Aliens and Ancient Engineers

This episode surmises that several ancient sites were built with help from aliens. Examples given are the ruins of Ollantaytambo in Peru, (an Inca city believed built atop a far older and more advanced-built fortress); the pyramids of Teotihuacan in Mexico, (which use heat and radiation shielding Mica in their engineering); the temples of Vijayanagara in India, (suggested to have been designed to tap into cosmic energy); the temples of Karnak in Egypt, (which show symmetrical and precision sculpting believed unobtainable by primitive hand tools); and the ancient ruins on Malta, (whose designs seems to have incorporated an acoustic energy technology).