The Great Pyramids of Giza is one of the world's oldest and largest mysteries that still baffle historians and archaeologists.
Stonehenge is a prehistoric monument in Wiltshire, England, made up of a ring of standing stones, each around 13 feet high.
The Nazca Lines are a series of ancient geoglyphs located in the Nazca Desert of southern Peru, which date back to 500 BCE and still remain a mystery to this day.
The Voynich Manuscript is a mysterious book with strange illustrations, which has puzzled scholars since it was discovered in the early 20th century.
The Antikythera Mechanism is an ancient Greek analogue computer, which was discovered in a shipwreck off the coast of the Greek island of Antikythera in 1901.
The Bermuda Triangle is known for mysterious disappearances of ships and planes that have never been fully explained.
The Shroud of Turin is a linen cloth that bears the image of a man who appears to have been crucified, which many believe to be the burial shroud of Jesus Christ.
The Easter Island Statues are a collection of nearly 1,000 monolithic stone statues, known as Moai, located on the Polynesian island of Easter Island.
The Phaistos Disc is a circular clay tablet, discovered on the island of Crete in 1908, which bears a hieroglyphic script that has yet to be deciphered.
The Indus Valley Civilization was a Bronze Age civilization that emerged in the northwestern region of the Indian subcontinent around 2600 BCE,