6. Some Believe Adolf Hitler was Obsessed with Finding the Holy Grail
Indiana Jones may have been onto something. If the creators missed much of the grail lore and Templar legends from the Middle Ages, one thing they did pick up on was the fact that Adolf Hitler, the leader of Germany during World War II, was intent on finding the Holy Grail. Nazism was officially nonreligious, but its leaders were preoccupied with the occult, particularly with rituals and objects that were believed to have mystical powers that they could use on their quest for world domination. The Holy Grail was one of those objects.
In fact, some claim that both Hitler and his right-hand man, Himmler, believed that Jesus Christ was an Aryan, of the same pedigree from which they thought (falsely) that the German peoples were descended. Their archeological programs included searches for holy relics; as evidence, some look to the increased number of archeological professorships in Germany that occurred under Hitler, as well as the virtually limitless budget supplied to the effort. After all, if you believe that the cup that Jesus drank from at the Last Supper will help you achieve world domination, you might as well pour all of your resources into finding it. Despite its best efforts, the Nazi regime never claimed to have seen it.