Throughout history, her face has evoked intrigue and mystery. One question remains: Who is the Mona Lisa? Follow the painting's rise to global fame and the theories surrounding it: What secrets are hiding behind the faltering smile?
Were these massive stones arranged into an elaborate calendar? Did Stonehenge serve as a temple for human sacrifices? What is its purpose? Dig into more research and recent findings in search for answers
Is the United States government hiding proof of extraterrestrial activity? From strange deaths, to leaked documents, to twisted secrets and deceptiondive deep into the mysteries surrounding the supposed Majestic 12.
From July to September 1518, the citizens of Strasbourg took to the streets to dance. And dance. And dance. A strange phenomenon took over and led people to dance to their deaths.
When the Dancing Plague took over the city of Strasbourg in 1518, the community took to the streets to dance. Could mind control play a part in this strange epidemic?
When a wave of tuberculosis struck New England in the late 19th century, people believed vampiric spirits were draining the life from their friends and family.
Whether it's small European villages in the 1700s or modern-day Hollywood movies, vampires have existed in human culture for hundreds of years. Is this widespread phenomenon real or are they just ideas created to invoke mass hysteria?
Legends about dragons have existed for centuries from cultures across the world. If Dragons aren't real, why were they regarded as fact for much of human history?
Were dragons based on an extinct animal that was killed off by humans? Or was any frightening beast that was unfamiliar to early humans classified as a dragon? Or maybe, dragons are simply a tall-tale that someone invented.
The Hanging Gardens of Babylon were regarded as a wonder of the ancient world. But there is very little information about them in ancient texts. Was it truly a paradise or did it even exist at all?
For almost two decades, German archaeologist Robert Koldewey headed an excavation looking for the Hanging Gardens of Babylon. He searched for it based on descriptions in ancient Greek and Roman histories.
A lot of evidence has been used to argue in favor of Nessie's existence. Are people really seeing a reclusive beast in the water? Is it an optical illusion? Or is Nessie truly a monster that's just camera shy for tourists?
For decades, people have been fascinated by crop circles. What started out decades ago as simple shapes has evolved into complex geometric patterns. Crop circles appear overnight but to this day, nobody knows how they form.
Easter Island, named after the day Dutch sailors discovered it, is an island in the Pacific Ocean with hundreds of mysteriously large "heads." They soar to an average 20 feet high and can weigh over 20 tons.
Easter Island is an isolated spot in the Pacific Ocean that's closest neighbor is over 1,000 miles away. How did ancient people arrive in such a remote place? Why did they construct the now iconic moai heads, and how did they transport it.
A young man checked into a Kansas City hotel by himself under the name Roland T. Owen back in 1935. After mysterious phone calls and visitors to his room, Owen was found savagely beaten.
Months after the the murder of hotel guest "Ronald T. Owen," his true identity was discovered to be Artemas Ogletree. But for years, the case went unsolved. Almost 70 years later, the Kansas City Public Library received an anonymous call.
King Arthur is Britain's famed warrior king who fought against the Saxons to preserve British independence. His story has been embellished through the ages but there have been many discrepancies.
Analyze the theories and mysterious circumstances surrounding this event. Was the plane brought down by a rogue passenger, or a cyber-attack? This is a crossover episode with the hosts of Conspiracy Theories and Unexplained Mysteries.
A series of ring-shaped ditches can be found throughout the Brazilian Amazon, which predate the rain forest itself. These structures remain a complete mystery, and archaeologists are unsure what to make of them.
A series of ring-shaped ditches in the Brazilian Amazon shows that a sophisticated civilization once existed in the rainforest. Could it have been the mythic city of El Dorado?
From the early 1800's through the 1930's, claims that giant skeletons were unearthed kept popping up in newspapers yet none of the remains were ever claimed.
From the early 1800s through 1920s, over 50 articles appeared in newspapers around the U.S announcing the discovery of giant skeletons in America. Can genetics or a rare disorder explain the giant skeletons?
The Clovis peoples have long been considered the predecessors to the native Americans. Recent evidence has suggested that North America may have been inhabited as long as 19,000 years ago.
The Clovis People have long been accepted as the first humans to arrive in the Americas. Then spearheads were discovered in the Americas that pre-date the Clovis by 2500 years.
UFO sightings are still largely unexplained today. The government did a massive, twenty-year study into what they could be. Are these mysterious objects the result of secret military projects?
What if the government's explanation for a UFO encounter is proven false? Could these sightings be the advanced technology of extraterrestrial visitors? If so, why doesn't the government want no one to know about it?
In December of 1945, five planes never returned to Fort Lauderdale Naval Base from a routine training mission exercise. Three rescue planes were sent to look for them. Only two came back.
The Devil's Triangle remains shrouded in mystery. What have legitimate studies conducted by the U.S. Navy revealed about the regular disappearances of ships and aircraft over this area of the North Atlantic Ocean?
A shrewd, confident businessman, achieving a net worth of over 12 million pounds in the 1920s, but would his business dealings eventually lead to his downfall?
He was known as the Hungriest Man in history, eating his way through corks, stones, live animals, and by swallowing an entire basketful of apples one after the other.
What is the science behind the way Tarrare ate the way he did? Most people wouldn't consider eating 12 whole eggs at once possible, but in 1700s France, Tarrare was an anomaly.
The mythical paradise described in the book of Genesis has roots in cultures across the globe. Many explorers, conquerors, and fanatics have attempted to locate it over the centuries.
On the hunt for the real location of Eden, they use biblical text as a map to locate where the Garden may have originally been located. The Middle East and South America are definitely possibilities for this paradise of religion and myth.
According to mythical beliefs, the unicorn is a shy creature, living deep in the forest and rarely venturing near people. The creature is found in literature dating back to 1800 B.C.E. and is referenced in the King James Bible.
Reports surfaced in the late 1800s from local tribesmen in the Congo claiming a small horse-like creature hid in the woodlands. Men went in search of the mysterious animal. The creature in question: a unicorn.
In 1216, just before his death, English Monarch King John lost the royal Crown Jewels. Were they lost to the landscape, buried beneath dozens of feet of silt and dirt? Or is it possible the jewels were intentionally misplaced?
The discovery of a corpse in 1948 on the beach in Australia creates a frenzy circulating rumours about the identity of the unknown man. In his pocket was a slip of paper with the phrase "Tamam Shud," translating to "it is ended."
