Stay up to date on all of HISTORY's latest premieres at http://history.com/schedule Hidden beneath da Vinci's unfinished painting "Adoration of the Magi," investigators found a sketch of an Egyptian temple being built. Learn the meaning of this secret and more in this video from Season 13, "Da ...

Watch all new episodes of Ancient Aliens returning soon, and stay up to date on all of your favorite History Channel shows at https://history.com/schedule. Ancient Astronaut Theorists believe that on Earth there are powerful hot spots that enable intergalactic teleportation. To find these hot ...