Isolated along the southernmost part of the planet, Antarctica is best known as the frozen continent. Yet, this untouched land has captivated brave explorers for centuries.

From lone operatives to agents of powerful regimes, assassins have left a trail of disruption that echoes through time; are assassins merely footnotes in history, or have they steered the destiny of civilization all along?

For thousands of years, mankind has been fascinated by the idea of creating mechanical servants to make our lives easier. Today, those dreams of the past are increasingly becoming our reality.

During the Middle Ages, the Vikings were infamous for being a bloodthirsty band of seafaring warriors; historians are learning surprising new things about this Norse society.

There are many bizarre tales involving U.S. presidents that defy explanation and are still shrouded in mystery.

Throughout history, there have been men of science who pushed the boundaries of experimentation to the edge of madness. They were renegades known for bizarre and often unethical experiments involving human-animal hybrids, mind control devices, and even unimaginable torture.

There's nothing more fascinating than a code that can't be cracked. For centuries, mankind has devised ingenious ways to hide valuable information using everything from enigmatic puzzles, to complex ciphers and secret symbols. If history's unbreakable codes can be deciphered, could we unlock answers to some of the greatest mysteries of both the past and present?

During World War II, a number of persistent mysteries were born including unexplained stories about everything from lost gold, to secret societies and highly advanced technology.

All over the world stand ancient structures so massive, precise, and baffling that they seem impossible for not just their time, but ours as well. From colossal walls and giant stone tombs to temples carved from solid rock, how did ancient civilizations achieve feats of engineering that still defy modern understanding?

Scattered across the globe lie mysterious ruins that are buried in sand-swept deserts, perched atop towering mountains, and shrouded in the heart of dense jungles. These age-old structures stand as silent sentinels from the past, their true history seemingly erased by time. Can modern archaeology unravel the enigma of how-and why-these wonders were built?

Even after centuries of study, the human mind remains as inscrutable as ever. Could the quintessential human machine, the brain, be even more powerful than we realize? And does that suggest that fantastic abilities such as Remote Viewing will one day be recognized not as science fiction, but as science fact--even if, for the moment, they remain UnXplained?

Urban legends are modern folklore rooted in mystery where chilling tales merge fact and fiction and blur the line between myth and reality. From the eerie reports of spontaneous human combustion and the hunt for the Highgate Vampire, to the unsettling boogeymen known as the Men in Black appearing after UFO sightings, could these thrilling legends, echoed over generations and believed by many, be more than just stories?

Humanity has launched satellites into outer space and submarines to the ocean floor, but the ground below Earth's surface remains shrouded in mystery. Are there profound secrets buried beneath layers of rock, or hidden in vast caves? Can the subterranean world below shed light on humanity's past, or even its future?

Throughout history, tales of inexplicable maladies to both the body, and the mind, have stirred morbid curiosity and palpable fear. From mysterious wounds that appear for no apparent reason--to a peculiar madness that compels people to dance themselves to death. Are these bizarre afflictions merely fabrications of the mind? Or could they arise from unseen forces that are beyond our comprehension?

For centuries, archaeologists have tried to unravel the mysteries of how – and why – certain incredible structures like the Great Pyramid at Giza, the staircase at Loretto Chapel, and Coral Castle were built. Will we ever find the answers? Or, might these structures have been intentionally constructed to perpetually mystify us?

Throughout history, many have believed that certain places, things, or even people can be tainted with dark curses. Ominous lakes that morph into watery graves. Unlucky numbers that seem to cause bad things to happen. Paintings and precious stones, which bring death and destruction to their keepers. But can these mysterious curses really have the power to bring us harm? And if so, is it possible to understand their power, or will it remain UnXplained?

A look at whether time travel has already occurred, on purpose or by accident, and scientists who believe it is theoretically possible.

Throughout history, catastrophic disasters have reshaped civilizations -- yet some events defy all scientific expectations.

From 1861-1865, the United States of America found itself in a bloody four-year struggle known as the Civil War. While history often focuses on the politics and battles of this bloody discord, there are fascinating stories of the people and places that played a role in the "War Between the States".

Since the dawn of humanity, tales of monstrous creatures lurking in the shadows of our world have sparked both fascination and fear. Today, we often dismiss these accounts as the stuff of myth and legend, but are we overlooking a potentially terrifying reality? With scientists discovering as many as 18,000 new animal species every year, isn't it conceivable that there could be real-life, flesh and blood monsters living among us?

During The Golden Age of Piracy, thousands of buccaneers terrorized the high seas and became legends. Their exploits spawned fantastic stories of larger-than-life characters, billion dollar heists and buried treasure that to this day, has never been found. Are these stories simply tall tales, or is the truth stranger than fiction?

Beneath our feet lie hidden ancient tunnels, sacred caves, and shadowy passages into a world of darkness shaped by nature, carved by man, and steeped in myth. Are these underground realms mere remnants of the past?

The American frontier is full of legends of cowboys, Native Americans, and outlaws. But there are also many eerie stories of cursed mountains, monsters and even UFOs. Could these tales be true? Is the Wild West much stranger than commonly though?

Perhaps the greatest unexplained mystery of all is: what happens to us after we die? Perhaps clues to the answer lie in unusual cases of near-death experience, reincarnation, and how memories can be passed from organ donors to transplant recipients. Are these phenomena figments of our collective imagination, or could they be real?

From the 17th to the early 20th century, America saw an unprecedented era of rapid western expansion. Millions moved west to lay claim to find their fortunes in gold and land for the taking in search of the American Dream.

According to the Greek philosopher Plato, the lost continent of Atlantis was once home to an advanced civilization before it was destroyed in a cataclysm. But was Plato's story merely a myth? Or did Atlantis really exist? For centuries, archaeologists have tried to uncover evidence to prove that this legend is true. Will Atlantis finally be re-discovered, perhaps by employing modern technology? Or will this lost civilization remain...UnXplained?

Dreams have inspired humanity for thousands of years and in all this time, we have yet to answer one fundamental question: What is the purpose of dreams? From nightmares linked to unexplained deaths and more.

Stories of unidentified creatures living deep beneath the surface of oceans and lakes include sightings of giant sharks, prehistoric serpents, and even razor-toothed mermaids.

Whether it's called intuition, clairvoyance, or extrasensory perception, this elusive "sixth sense" defies explanation; can scientists find the secret to unlocking these remarkable gifts?

For over 100,000 years, humans have found ways to lay the dead to rest. Graves, tombs, cremations are all considered respectful ways to provide the deceased with a final resting place. But is it possible that some of these practices can preserve the soul for eternity? Or even bring the dead back to life?

There are many puzzling artifacts from around the world that challenge everything known about the technological capabilities of distant ancestors; some ancient objects are so mysterious they've spawned endless debate and theories.

King Arthur, England's first pop culture superhero; his exploits inspired blockbuster movies and television series like "Middle Earth", "Harry Potter", "Game of Thrones" and "Star Wars"; the significant impact of Arthurian legend on Western culture.

Will we ever understand the motivations that drive people to undertake the most bizarre, intricate, and dangerous crimes -- or will the mind of a master criminal remain - UnXplained?

Abandoned cities. Ancient cultures nearly erased by time. And colossal empires that simply vanished without a trace. How does a civilization become "lost"' What could cause once-thriving groups of people to just abandon their great cities, never to return' Can modern scientific knowledge help answer the unsolved questions surrounding these lost civilizations, or is there something more mysterious at work'

On March 11th, 2020, the World Health Organization declared that the outbreak of the lethal Coronavirus had become a worldwide pandemic. We'll examine some of the most devastating plagues in human history, as well the scientific advances to combat these diseases, including the development of Edward Jenner's vaccine for smallpox in the 1790s. Jenner's vaccine was one of the first major breakthroughs in modern medicine and helped to end humanity's superstitious attitude towards disease. But in the future, might we face diseases that are different from the ones we've experienced in the past?

Could a cache of fantastic riches have been buried centuries ago on a tiny island in the North Atlantic'.

A meteorite falling from the heavens. A gemstone with a deadly curse. A sandstone so sacred that wars have been fought to protect it. Stones that can choose a king or cause death. What's it about stones that inspire people to worship them?

All over the world, there are giant monoliths that our ancient ancestors carved out of solid rock. But what was the purpose of these huge stone monuments? Did they serve some kind of ritual function? Were they intended to honor the gods? Or is it possible that, as some believe, certain monoliths were actually designed to conduct energy?

Many believe it to be the Word of God, but others claim it contains inconsistencies and contradictions that could only be manmade.

Remarkable feats of engineering from our ancient past span the globe. Some are amazing in size. Others in sophistication. Some are so strange they border on inexplicable. Did the ancients have advanced scientific knowledge that has been lost to time? How--and why--did they fashion these incredible wonders?

Modern prophets. Catastrophic premonitions. Dreams of future crimes. Can people really predict the future. If so, could this knowledge help us avoid deadly events waiting in days to come or is the future a mystery unfolding all the time.

Ancient cataclysms are believed to have left Mars barren, but science continues to find clues that this red planet was once blue and capable of producing life. For centuries, humanity has been fixated on Mars, the glowing red orb in the night sky. As a new era of exploration of the Red Planet begins, humans are on the cusp of finally solving the Red Planet's mysteries.

Many see them as massive testaments to America's progress. Some view them as immutable symbols of the human spirit. Others perceive them as sacred shrines dedicated to the ideals of liberty and freedom. But no matter what they represent--America's monuments are inarguably impressive due to their colossal size and scope, their groundbreaking feats of engineering, and their storied histories. Why is it that America's greatest monuments continue to enthrall us decades--and sometimes centuries--after their creation? And perhaps more importantly, what closely guarded secrets may their implacable facades be hiding?

Dracula. Lycaon of Arcadia. The Beast of G vaudan. These are the names of grotesque monsters who have reared their terrifying heads throughout history. Unearthly creatures that, according to legend, thrived on human blood - and feasted on flesh. Vampires and Werewolves are human monsters, creatures of the night. But, could they actually be... real'

A dog that can detect cancer faster than doctors using sophisticated equipment. A horse that can read your mind. And birds that can sense disaster days before it happens. What gives animals these extraordinary powers? We like to think of ourselves as the peak of evolution--but what if we're wrong?

Today, human civilization spans the globe, and there are more than 7 billion people on Earth. But how did humanity evolve? Although many around the globe believe that the divine hand of God placed homo sapiens on Earth, were there other kinds of human-like creatures--cousins of man--that could have been just as intelligent as us? And if so, might these other species still exist today, perhaps in remote parts of the world?

All over the world, there are places and objects that are thought to be cursed; many people avoid these locations and things, believing they will bring harm, while others think that curses are nothing more than superstition and folklore.

Mankind has always pondered what happens after death and what we leave behind. Many wonder, what power our bones may hold. Some believe, bones can bring good luck or even allow us to speak with the dead. But is it possible that our bones hold some sacred power, or perhaps even our souls?

For centuries, legends and eyewitness accounts have told of a massive, hairy creature that roams the forest on two legs. While science has yet to prove the existence of this mythical man-beast, countless researchers and experiencers around the world are convinced that there is a giant, ape-like animal hiding in remote parts of the world. They point to the discovery of large, inexplicable footprints as evidence of the so-called "Bigfoot" that they hope to prove is real. But does Bigfoot actually exist?

There are some events that are so destructive, so astounding, or truly miraculous -- that for the faithful -- they must be directed by the hand of the Almighty. The Great Flood. The Plagues of Egypt. Sodom and Gomorrah. Moses Parting the Red Sea.

Whether surviving freezing temperatures, diving unfathomable depths in one breath, or lifting weighty objects, superhuman feats never cease to amaze; pulling them off could be a matter of training, willpower, genetics, or something more mysterious.

For hundreds of years there have been legends of vast treasures hidden throughout the United States. Stories of stolen gold, piracy, murderous revenge, but are these legends of lost treasures tall tales? Or is it possible that these valuables are out there, waiting to be discovered?

Every year, thousands of people report looking up at the sky and witnessing unidentified flying objects. A vast majority of these strange and disturbing incidents take place in the same locations on Earth. Is it possible that extraterrestrial spacecraft are repeatedly visiting Earth at so-called "UFO Hot Spots?"

Throughout history and across the globe, there have been many sacred relics believed to be imbued with mystical powers. Is it really possible that these ordinary items, like a tooth, or a soldier's spear, can have the ability to perform miracles?

Humans can survive catastrophic injuries and deadly scenarios that defy the odds in ways that are inexplicable; these survivals challenge the best attempts to explain how anyone could live through such circumstances.

For centuries, fantastic tales of terrifying monsters have fascinated mankind. Bizarre beasts of all shapes and sizes have been portrayed in some of history's most classic stories and folklore. But what if these creatures were more than just works of imagination and superstition? Could these stories of legendary creatures be inspired by actual events and where does the line between fact and fiction fall? Do these famous monsters still lurk in the dark corner of our globe today?

The human mind is home to all our thoughts, hopes, dreams, and memories.

Sunken ships filled with priceless cargo. Lost cities of gold. Ancient temples concealing untold riches. There's something about these hidden treasures that captures the human imagination. But are lost treasures merely the stuff of legend? Or could they actually be real?

From ancient civilizations to 20th century empires, mankind has had an inexplicable fascination with preserving the dead. But why? Are we simply too attached to the living to let them go? Or could it be that death isn't really the end, but rather a transition to a new beginning?

For centuries, humanity has been compelled to build remarkable structures that are much more than simple places of shelter or work. What makes us want to create magnificent buildings that are bigger and grander than ourselves--and last for centuries? Whether it's Stonehenge, the Notre Dame Cathedral, or the world's tallest skyscrapers--extraordinary works of engineering are evidence of a strong instinct within us that we don't fully understand. Are we trying to prove something? Or perhaps show our power over nature? Or could there be another reason that is, for now...UnXplained?

Mysterious disappearances are confounding and bizarre and simply can't be explained. Can these be chalked up to tragic accidents? Or could they be the result of something more...UnXplained?

In our modern world, we tend to think that technology and scientific knowledge can help protect us from almost anything, including natural disasters. But is that really true? Or are we just as vulnerable today in the face of raging fires, violent earthquakes, and destructive hurricanes as our ancestors were in the past?

All over the world are forbidden 'triangles'--mysterious regions where ships, planes, and people enter and then just disappear. They are found in Bermuda, Alaska, Japan and elsewhere. But why? Do these locations defy the laws of physics? Or is it possible that there are some places on Earth that we are simply not meant to go?

For centuries, humanity has looked up at the Moon with a sense of wonder. But is the Moon just a rock floating in space? Or could it hold profound secrets—and perhaps even possess incredible powers? That is what we will try and find out.