During World War II, the Nazis built hideouts all over friendly territories, in hard-to-find places like deserts, mountains and jungles. One such jungle was Teyu Cuare in Argentina and scholars recently explored it.

The hideouts might have been bases for Hitler's famous occult/magical exploration interests or for high-ranking Nazi officers in the event of defeat. Obviously Argentina was a friendly spot for Nazis after the war, dictator Juan Perón welcomed any of them with money or loot, but the proof this was built by them is circumstantial, even if compelling. "We found German coins minted between 1938 and 1944, fragments of a porcelain plate that said it was made in Germany and Nazi symbols and German inscriptions carved into the walls," said team leader Daniel Schavelzon. "It's hard to prove the site was definitely made by the Nazis, but we're working to unearth more evidence to support this hypothesis."

Given the age, it was clear none of them ever occupied it so the reason to create it likely will remain a mystery.