These Ancient Greek dragon homes were know to have otherworldly powers, in this clip from Season 18, "Decoding the Dragon Gods." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show ...

The team conducts an experiment to find out what’s beneath the mesa, in this clip from Season 3, "Dome of the Rock." #TheSecretofSkinwalkerRanch Subscribe for more from The Secret of Skinwalker Ranch and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Watch more of ...

UFO researcher had to halt his studies after being visited by strange entities, in this clip from Season 18, "The Shadow People." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show ...

An eyewitness in Chile encounters a mysterious UFO during a routine mission, in this clip from Season 15, "Destination Chile." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show and ...

Fear begins to arise on the ranch as a team member must be taken to the emergency room after passing out, in this clip from Season 3, "Full Metal Mesa." #TheSecretofSkinwalkerRanch Subscribe for more from The Secret of Skinwalker Ranch and other great The HISTORY Channel shows: ...

Ancient Astronaut Theorists believe that the colossal tower of Jupiter was erected by ancient sky gods, in this clip from Season 18, "Beneath the Sacred Temples." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: ...

Ancient Astronaut Theorists believe aliens might’ve crashed landed in Russia based on mind boggling evidence, in this clip from Season 15, "The Relics of Roswell." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: ...

Extraterrestrials might’ve been crucial to the construction of Nan Madol, in this clip from Season 18, "Beneath the Sacred Temples." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the ...

An eyewitness spots something strange in Lake Michigan, in this clip from The Proof Is Out There. #TheProofIsOutThere Subscribe for more from The Proof Is Out There and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Watch more The Proof Is Out There on YouTube in ...

Ancient Astronaut Theorists believe that the obelisk of Egypt provides a connection from earth to the heavens, in this clip from Season 17, "Mystery Of the Standing Stones." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: ...

Ancient Astronaut Theorists travel to central New Mexico to examine a UFO crash site related to Roswell, in this clip from Season 15, "The Relics of Roswell." #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT ...

The team finds out new information regarding a secret portal located on the ranch, in this clip from Season 3, "Digging Up the Past." #TheSecretofSkinwalkerRanch Subscribe for more from The Secret of Skinwalker Ranch and other great The HISTORY Channel shows: ...