On 12 December 1910, heiress and socialite Dorothy Arnold vanished from the streets of New York City, never to be seen or heard from again.

No theory regarding the mummy in KV55 fits precisely. Queen Tiye can be ruled out, as can Kiya. Akhenaten and Smenkhkare are best candidates.

The last definite record of the tomb of Alexander the Great dates to roughly 215 AD, when Caracella visited the tomb. But where is it now?

An ancient Egyptian mystery that may have been answered, but often disputed, is how old is the Sphinx. There are conflicting opinions.

The dead man, who would later become known as “The man who never was,” was roughly 34 years of age, and used in “Operation Mincemeat.”

‘The Vanished Battalion’ was a group of soldiers from the Sandringham Company, Norfolk Regiment that allegedly became lost in battle.

The Mayan Calendar was a way of measuring time developed by the ancient Mayans. They have evoked the curiosity of many astronomy and/or archaeology experts.

The Marree Man is a modern-day geoglyph located in south-central Australia. It depicts an aboriginal hunter holding a weapon in his left hand.