The mysterious band of Catholic warriors was said to be keepers of the Holy Grail — the cup of Christ that they purportedly found during the Crusades.

"It's incredible that in more than 250 million years of reptile evolution, the way the skull develops in the egg remains more or less the same. Goes to show — you don't mess with a good thing."

The wolf-dog hybrid was dated at 14,000 years old — and woolly rhinos are believed to have gone extinct around the same time.

It's the largest reptile egg ever discovered, and the creature who laid it was at least 200 feet long.

Named for the author of the Pledge of Allegiance, Francis J. Bellamy, the Bellamy Salute was used from the 1890s until 1942.

"They were all made sacred. Turned into gifts for the gods or even personifications of deities themselves."

Though these hospitals once saw countless patients pass through their doors, they're now ghostly shells of their former selves.

"We are doing what human beings have always done but we are doing it on an unprecedented scale with materials that are going to take hundreds, if not thousands of years, to biodegrade."

The palace was razed by the Spaniards for materials and used to create a new home for Cortés nearby.

When the noblewoman's tomb was uncovered in 2012, researchers were stumped as to why she had been buried with the beasts of burden.