Ancient Aliens Season 3 Episode 1
Aliens and The Old West HQ [Full]

Opening with clips from the 2011 film Cowboys & Aliens, this episode looks at American Old West legends that may have involved ET contact, such as the Aurora, Texas UFO incident where a local cemetery claims to hold a body from an 1897 UFO crash; Native American legends surrounding the Serpent mound in Adams County, Ohio; reports of a Thunderbird that periodically emerged fromCalifornia's Elizabeth Lake, and a story of ranchers shooting at "metallic birds" near Tombstone, Arizona

Ancient Aliens Season 3 Episode 2 (FULL)
"Aliens and Monsters"

This episode examines modern-day genetic engineering, cloning and hybridization technology, and suggests that such technology could have been used by ancient aliens in the past to manipulate mankind and the environment. Also theorized are that the legends of creatures, such as the Chimera and Hydra, and humanoids, such as the Minotaur and Medusa, may have been encounters with beings created through alien animal/human hybrid experimentation. 

Ancient Aliens Season 3 Episode 3 (FULL)
"Aliens and Sacred Places"

This episode suggests that some of mankind's most sacred places were points of contact by alien beings. Examples given are Jerusalem's Temple Mount and Dome of the Rock; the Kaaba stone at the Islam shrine at Mecca; the temples of the Ajanta Caves in India; the churches of LalibelaEthiopia that are carved out of rock; and the ancient city of Baalbek in Lebanon which was allegedly built with a "landing pad" of monolithic rock. 

Ancient Aliens Season 1 Episode 4 (FULL)
"Aliens and Temples of Gold"

This episode suggests that aliens came to Earth to mine gold. Examined are the legends of cities of gold such as El Dorado and Paititi; Lake Puray in Peru where UFO sightings may be linked to gold beneath the lake; the gold-creating device called the Philosopher's Stone; the Hall of Records beneath the Great Sphinx of Giza, (suggested to be a repository of ancient knowledge); a Medieval church in the French village of Rennes-le-Château that may hold the secrets of alchemy; and Scotland's Rosslyn Chapel where a helix-shaped pillar, (suggested to represent DNA), may be the hiding place of the Holy Grail

Ancient Aliens Season 1 Episode 5 (FULL)
"Aliens and Mysterious Rituals"

This episode proposes that various ancient sites and the rituals performed there were not to praise mythical gods, but to reenact contact and communication with alien beings. Examples given are the Mayan temple of El Castillo, Chichen Itza; the Celtic Beltane Festival; the ceremonies of the Kayapo people of Brazil that involve a dancer dressed in an outfit that resembles a spacesuit; Medieval coronation ceremonies and the symbolic meanings of thrones, crowns and scepters as communication devices to the heavens; Native American and Shamanistic chants and prayers; and the ritual meanings of the Catholic Mass

Ancient Aliens Season 1 Episode 6 (FULL)
"Aliens and Ancient Engineers"

This episode suggests 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). 

Ancient Aliens Season 1 Episode 7 (FULL)
"Aliens, Plagues and Epidemics"

This episode suggests that some plagues and diseases were brought on by pathogens of extraterrestrial origin. Examples given are sudden pandemics such as the Spanish Influenza, the Plague of Athens, the Justinian Plague and the Black Plague, which were accompanied by reports of unusual celestial phenomena, and the appearance of strange creatures and objects in the sky; ancient carvings of figures dressed in what are suggested to be hazmat suits; unexplained illnesses that have appeared after meteor impacts, NASA experiments with bacteria and extremophiles that can survive in the extreme conditions of space; and the recent appearance of unusual medical conditions such as Morgellons Disease

Ancient Aliens Season 1 Episode 8 (FULL)
"Aliens and Lost Worlds"

This episode suggests that various past civilizations were ruled by otherworldly beings. Examined are carvings in the Mayan city of Copán that are suggested to depict kings dressed in spacesuits; the Greek and Persian temples of Nemrud Dagi in Turkey, constructed by King Antiochus who some believe had advanced knowledge of astronomy and access to "magical" technology; the Nazca people of Peru who elongated their skulls to possibly mimic beings they encountered; the Moai statues of Easter Island that may have been erected with anti-gravity technology, and the Garden of Eden which may have been an alien laboratory for the creation of mankind. 

Ancient Aliens Season 1 Episode 9 (FULL)
"Aliens and Deadly Weapons"

This episode suggests that the development of various weapons throughout history may have been guided by aliens. Examined are ancient legends that speak of fire and the secrets of metalworking as gifts from the gods; stories of divine weapons such as the sword Excalibur as possibly given its power from an alien source; the mystery of Greek fire, a gift from angels for the Byzantines; the development of the complicated chemistry involved in gun powder by the ancient Chinese; the writings of the ancient Hindu Mahabharata that speaks of high tech weapons such as guided missiles, beam weapons and nuclear devices used by the gods; and the Cambodian tales of Preah Pisnulok who wielded a blazing sword reminiscent of the science-fictional lightsaber

Ancient Aliens Season 1 Episode 10 (FULL)
"Aliens and Evil Places"

This episode examines various places on Earth that are associated with evil and death, and suggests that they may have otherworldly connections.