I don't believe that man was Hitler. The money probably came from the sale of some of the antiques.

The story is probably a red herring to distract from the concealment of archaeological artifacts that give a different story to the history we were taught growing up.

Of note are the images of pyramids with the eye on top, called the 'all seeing eye' it was adopted into free masonry. It's probably a Chinese Whisper, that changed with the telling, of the largest pyramid at Visoko in Bosnia, where tunnels underneath ran water through gravel over long distances, generating vast amounts of negative ions (negatively charged oxygen), these exited vents at the top of the pyramid to create a halo effect. This was during the ice age.

The website piramidasunca.ba is so badly run I can't find the photo of a carving depicting this, found nearby.

A factor of Chinese Whispers is changes to what something signifies.