Experts follow evidence of a Nazi base in the Amazons to a dark discovery.

Satellite images capture a mysterious building on Jeffrey Epstein’s island.

Images reveal an alien substance in the land of the Aztecs.

New evidence reveals a Viking portal to their spiritual realm.

Images reveal a forgotten war-torn fortress in the swamplands of Louisiana.

Experts uncover a gravesite with the remains of possible vampire burials.

A mystery in Hawaii points to human sacrifice and a shape-shifting god.

Satellites lead experts to an island that may be linked to a massacre.

When experts spot what appears to be an abandoned city in the Caspian Sea, they investigate declassified Cold War evidence to reveal an Atlantis-like city built by the Soviets; what they find exposes its long-lost secrets.

Satellites capture evidence of catastrophic and secret military testing.

Satellite images capture evidence of an abandoned town hidden in the American wilderness, and as experts analyze this new evidence, they reveal what this strange place has to do with a top-secret military plan to battle an army of the undead.

Crop circles spotted on an island in the Mediterranean might not be from aliens, but from a threat closer to home: Nazis; new discoveries help experts uncover who made them and for what sinister purpose.

Satellite images capture a volcanic island that suddenly appears in the Pacific Ocean, and when NASA scientists arrive to investigate, they are baffled to find it's home to a primordial slime and zombie creatures with origins in outer space.

Experts suspect a lost pyramid in China could be a secret military base.

The remains of an abandoned settlement high in the mountains of Peru could be an ancient Roman village, leaving experts to speculate if the Romans visited the Americas centuries before Columbus; if so, it could point to long-lost gold.

The remains of an abandoned settlement high in the mountains of Peru could be an ancient Roman village, leaving experts to speculate if the Romans visited the Americas centuries before Columbus; if so, it could point to long-lost gold.

Satellites capture a temple-like, Nazi structure hidden deep in the forests of Poland, leading an expert to investigate and uncover a tale of terrifying rituals, black magic and the rise of the most feared division of Hitler's war machine.

Satellites capture two strange patterns in the desert next to Area 51.

When satellites spot a strange, 2,000-year-old structure in Wales, some suspect a secret connection to King Arthur; using modern-day technology and ancient texts, experts investigate new leads that could point to the mythical Round Table.

When mysterious structures are discovered deep in a remote forest, experts investigate if this strange site was the long-lost birthplace of a top-secret Nazi project that produced some of the deadliest weapons the world had ever seen.

When instruments on the International Space Station suddenly malfunction every time it passes over a mysterious site in the Atlantic Ocean, experts investigate if this eerie behavior is more than just a tech glitch, but a prophecy of global doomsday.

When strange circles of reindeer appear in the remote tundra of Sweden, experts investigate if this mysterious event could be evidence of fatal aftershocks from the Chernobyl nuclear disaster.

When an island off the coast of Mexico suddenly disappears, government officials scramble to find an explanation; cutting-edge technology might reveal if the strange place was destroyed by a foreign power or if it existed at all.

When the people of a thriving Midwestern town suddenly disappear, they leave behind an eerie ghost town with a dark secret; experts use cutting-edge tech to investigate if the mysterious exodus could be evidence of a freak natural disaster.

When satellites spot anomalies in the unexplored Amazonian jungle, experts wonder if they've discovered relics of a lost civilization; an on-the-ground investigation reveals a dark truth that's more sinister than ever imagined.

When satellites discover a strange abandoned city frozen in time, experts investigate what caused the people who lived here to disappear overnight; using cutting-edge tech, they follow fresh leads to uncover if this mysterious city has a dark secret.

After satellites spot an anomaly at Egypt's oldest pyramid, experts uncover a long-lost labyrinth that could lead them to the darkest secrets of Imhotep, the mysterious high priest who built this strange complex.

Strange satellite images taken above the Nile Valley could point investigators to long-lost relics buried in an unexplored city of the dead; what they find could reveal new secrets of Kush, a once-mighty kingdom of untold gold and treasure.

New satellite evidence reveals a mysterious spiral structure from space, and experts speculate that it could be the lost city of Atlantis; using cutting-edge technology, they investigate the truth behind this strange phenomenon.

When an extreme drought hits Spain, the ruins of a long-lost civilization suddenly emerge, and using cutting-edge technology, experts investigate evidence of ancient cannibalism.

The world's most dangerous threats are in top-secret locations all over the planet, and using cutting-edge technology, experts reveal the truth behind these sinister mysteries from space.

An abandoned ghost town in a remote desert with a dark past. When a strange facility is spotted in Russia, experts investigate if it's hiding evidence of alien life. Cutting-edge tech reveals new clues to these sinister mysteries from space.

When satellites spot a mysterious structure in North Korea, experts investigate if this sinister evidence points to a looming nuclear threat, and using cutting-edge tech, they reveal dark secrets from this strange place.

When a strange pattern appears in a field, experts wonder if its an extraterrestrial response to a message sent to an alien star cluster in 1974, and using cutting-edge science, they uncover its true origin.

When a sinister cave is discovered in a remote corner of Iceland, experts uncover a secret underworld tunneling to unknown depths, and using cutting-edge tech, they investigate if this strange place could hold secrets of alien worlds.

In the white ice of Antarctica, satellites discover a mysterious trail of sinister black objects, and when experts discover that it's moving, they use cutting-edge tech to investigate who or what is behind this strange phenomena.

When an strange structure is discovered in the Gobi Desert, experts investigate if this mysterious site could reveal the whereabouts of lost treasure, which might change everything we know about Genghis Khan and the Mongol warriors who once lived here.

When a strange, red plane is discovered near the sight of the Roswell UFO incident, experts wonder if the aircraft has Nazi or extraterrestrial origins, and their investigation reveals new secrets about one of America's most famous faces.

At a mysterious site in the Gobi Desert, experts have discovered a monster graveyard, and this groundbreaking find contains the treasures of the alien beasts that once lived in this strange world.

Something strange in the Himalayas could be evidence of a top-secret CIA program to turn monks into killer agents; cutting-edge science helps experts investigate the truth behind the mysterious anomaly.

Alien monoliths haunt the coast of England; an obliterated jungle points to an brutal narco gold rush; evidence of a strange blood-red creature emerging from the deep.

A satanic symbol that points to an army of the dead in Siberia; a massive stone giant in a remote desert; evidence of a Russian doomsday device right on America's doorstep; cutting-edge technology helps experts answer sinister mysteries from space.

Zombie reindeer haunting the mountains of Norway. Strange circles in the sand by a secret US military base. A gigantic streak in the Arctic pointing towards alien life. Cutting-edge technology helps experts answer these sinister mysteries from space.

A fleet of sunken ships that point to ghosts, cannibals, and bloodshed in early America; strange arctic holes that NASA can't explain; near Area 51, mysterious alien structures straight out of Star Wars.

New discoveries from space give experts new clues in the hunt for Jack the Ripper; a strange object crash-lands in Antarctica, experts speculate it could be an alien visitor.

Hundreds of shipwrecks in the middle of a desert in Africa. A ghost town where hundreds of its inhabitants have mysteriously died. Something strange in North Korea. Cutting-edge tech helps experts answer these sinister mysteries from space.

A site that could be the Garden of Eden hides a deadly secret; when a gateway to hell suddenly opens, experts investigate where it leads; a mysterious shipwreck could be an infamous Soviet KGB pirate ship.

Evidence of a mysterious 5,000-year-old structure suddenly appears in Ireland. A top-secret machine that can see back in time. A satanic pentagram in the snow that points to witchcraft in the New World.

A strange circular forest next to a notorious cannibal site. When an eerie crater is spotted in Siberia, experts uncover if it could be evidence of Nikola Tesla's doomsday device. Cutting-edge tech helps experts answer these sinister mysteries from space.

Strange mounds in Transylvania might pinpoint the location of the tomb of the bloodthirsty tyrant believed to have inspired Dracula. A mysterious ancient city is discovered on a coral reef. Images of a plane crash sets off a hunt for a drug lord.

A strange structure shaped like a giant shark might point the way to a lost civilization's Fountain of Youth. A massive hurricane heads toward Florida but something unexpected is in its eye. Bizarre marks across the eastern US leave experts baffled.

A ghost ship with links to the mob suddenly appears on a California beach; strange markings could be a coded message that reveals a plot to overthrow the Queen of England; a lake believed to have magical healing powers holds clues to life on Mars.

A ghost town covered in a strange, white power emerges from a lake in Argentina; upon the discovery of a lost jungle in Africa, scientists embark on a dangerous mission to explore it; a declassified CIA image uncovers a bizarre, giant Soviet weapon.

A strange forest of razor-shape stones could be home to an undiscovered Hobbit-like humanoid species; when a man-made island mysteriously appears off the US coast, new evidence points to secret government experiments into psycho-chemical warfare.

A forbidden island points to a strange South American town that locals claim was the home of Adolf Hitler. New data from NASA satellites might reveal a sunken lost continent in the Indian Ocean. A pit of bodies suggests fears of a zombie nightmare.

A strange lake in Transylvania is the home of an abandoned village and a terrifying secret. When an labyrinth is discovered on an island once home to an ancient Greek civilization, experts investigate if it was the legendary home of the Minotaur.

A lost city near Jerusalem might have been the home of Goliath; bizarre underwater formations might point to a top-secret US weapons testing facility; a strange sighting in the Arctic could be a lost Nazi relic.

An abandoned megacity in a remote jungle might be the home of an ancient treasure and a dark secret; when a mysterious circular stone structure is discovered in Scotland, experts investigate whether it's the fabled Round Table of King Arthur.

Evidence of human sacrifice for the Viking god Odin; shedding new light on Genghis Khan.

New evidence might finally identify the hiding place of the billion-dollar Nazi gold train; a discovery of a long-lost settlement rewrites the history of the Vikings in North America; a blood-red river in Siberia points to catastrophic pollution.

An ancient man-made volcano might reveal buried treasure and bloody human sacrifice. When NASA discovers a strange pattern in the Arctic ice, experts investigate if it has alien origins. A mystery in the Sahara might have a sinister explanation.

Man-made islands are spotted near a North Korean missile facility. When something unexpected is found in a remote desert, experts investigate a lost city of giants. A strange discovery in Siberia could reveal a mission to the center of the earth.

An abandoned city in the African jungle might have a bloody past of malevolent spirits and cannibals. Mount Vesuvius shows signs that it's awakening, and the mafia could be to blame. Experts investigate Hitler's secret Nazi UFO program.

Experts investigate a glowing lake reported to turn things into stone. A mysterious structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant. A dark conspiracy could be at work in the Australian outback.

A mysterious Stonehenge-like structure in Russia might have links to the Nazis. Experts uncover clues to a mega-tsunami with the power to devastate the United States. A huge lake appears in the Sahara overnight, and its explanation could be mythical.

New discoveries lead investigators to a crypt rumored to hold the Ark of the Covenant. When great white shark is killed, experts suspect an mysterious ocean monster. Strange markings in the desert might be a tribute to an ancient spider god.

Treasure hunters have searched for a lost Incan city of untold wealth for a century, but new technology might finally locate its riches; a strange mountain in Egypt sparks an investigation into Cleopatra's gems and the tomb of Alexander the Great.

A ghost ship is found abandoned on a remote island that's home to one of the world's last uncontacted tribes. A strange labyrinth in Sicily might have a sinister connection to the Mafia. New evidence reveals a mysterious military compound in Russia.

New evidence might reveal how the Mayans vanished; when scientists investigate an abandoned settlement, they discover traces of ritualistic drug binges from the ancient world; a mysterious symbol in the desert points to a sex cult of millionaires.

Strange spots near the Grand Canyon may hold clues to the legendary treasure of a notorious bandit. Satellite images could explain desert ruins rumored to be an entrance to an underworld. A city-size chunk of ice suddenly disappears in Antarctica.

A giant carving of a strange creature suddenly appears in the Australian Outback. Mysterious bright green lights illuminate the seas around Thailand. Top secret activity is discovered at Iran's nuclear facility.

Strange black holes appear near Egypt's ancient pyramids, and new evidence points to a disturbing conclusion. Ruins in Peru suggests that the Inca people knew far more than previously thought. A mysterious red swarm invades a beach in India.

Legends of ancient giants surround a mysterious monument in the Holy Land. A bright pink lake could point to a strange, undiscovered new species. When a young boy disappears in a sand dune, satellite images help with the investigation.

Investigators find a new clue about the missing Malaysia Airlines flight that disappeared in 2014. An astronaut spots something strange in the Sahara Desert. A mysterious orange sludge invades a remote village in Alaska.

A buried monument offers new evidence about one of the Bible's greatest mysteries. A giant shadow engulfs the Pacific Ocean. Scientists have trouble explaining a strange lake that's shaped like a perfect circle, and is home to otherworldly life.

A dagger sealed in King Tut's tomb for more than 3,000 years is made of a metal that seems to have extraterrestrial origins. A massive swastika is found in the desert near Roswell, NM. Satellites hunt for the world's most wanted man, Joseph Kony.

A heavily armored force takes over one of Syria's most ancient archaeology sites, prompting fears that its relics are being stolen. Tanks appear to be facing off in Antarctica next to an unworldly object. A water reservoir in LA suddenly turns black.

A sinister giant swastika appears in a forest in Germany. A strange pattern is etched into the desert near the famous Nazca lines, but archaeologists don't know who put it there. Mysterious markings are spotted in an isolated corner of Antarctica.

Satellite images reveal how El Chapo escaped from a high security prison in Mexico. Mysterious patterns in the Australian outback and the Kalahari Desert spark a major scientific investigation. A giant black stain appears in a war-torn area of Iraq.

A giant letter Z is carved into a Mexican hillside, evoking the mark of a legendary outlaw. A strange sighting in Germany points to secrets from the Cold War. Massive, blood-red marks in China prompt fears of a violent government crackdown.

A strange mass breaches surface of an ocean near Antarctica, sparking rumors of a mythological sea monster. An area of the US-Mexico border becomes an international mystery. Ancient rock carvings depict weird, unearthly beings.

An amateur archaeologist stumbles open strange symbols scratched into the Kazakhstan Desert; CIA surveillance photographs show what looks like a giant Star of David on the island of Cuba; and a lake in the Brazilian rain forest that turned bright pink.

A vast structure near the legendary city of Petra points to a bloody past.

New evidence could lead to the discovery of an ancient civilization.

A massive chasm in a Siberian forest may be a gate to the underworld.

Strange images from Colombia could lead researchers to a legendary city.

Strange images could explain mysterious mummies found in a desert.

A young boy uses satellite images to uncover lost cities of the Maya.

A strange arrangement of stones may be connected to a mythical wizard.

Evidence of human activity is found in strange times and places, and a new perspective on a biological activity known since the nineteenth century.

Five discoveries are probably related to potential warfare and one possibly to wildlife.

Major natural anomalies and varied human activities are investigated.

We investigate two examples of human activity in the U.S.A., one in Africa and one in Asia, with two natural phenomena where ice is a major factor.

We investigate two examples of men at war, and two engaging with water, but another vision is in the eyes of the beholders, and the last phenomenon is a severe natural event.

We investigate one natural phenomenon, four shapes that look like being of human origin, and monitor one example of human origin and current destruction.

A possible sighting of Noah's Ark; the face of Jesus in a Hungarian field; and God's wrath captured in action.

Possible clues to the location of El Dorado, the legendary city of gold, are studied.

American stealth technology inside China; apparent signs from lost veterans in Vietnam; a blood-red lake in Iraq.

Strange spiral markings in an African desert; a fleet of ships stranded in the middle of a desert; and huge arrows in the Badlands of the American west.

A possible sighting of Genghis Khan's lost tomb; dead patches in the desert; and the world's oldest and strangest lakes.

Strange sightings in the Bermuda Triangle; and a massive tsunami that disappeared.

A blood trail spurs a satellite investigation. Also: strange spirals in the Kalahari Desert; and a bizarre pattern off the South Korean coast.

A massive tsunami hundreds of feet high that never touches land; a secret underground base in China; an image from space may have revealed the location of the Garden of Eden.

Weird barren rings in the Namib Desert, an island the size of Manhattan that vanishes without trace and a lost city in the heart of the Amazonian jungle. What on Earth? Investigates six more mysteries captured from space.

First seen from space in 1965, the Eye of the Sahara is a beautiful 25 mile structure, but how it formed remains a mystery. And are extraordinary clouds emanating from an island in the Indian Ocean evidence of a terrifying new weather weapon?

NASA astronaut Mike Barratt, describes photographing a strange ring in the ice on the world's oldest and most mysterious lake from the International Space Station. More rings on Lake Baikal have been seen since, they baffle scientists.

A possible smoke screen over North Korea worries military analysts while an amateur archaeologist makes an extraordinary discovery with the help of a satellite image; has this image revealed not one but two forgotten pyramids in Egypt?

Images of earth from space reveal an intimate portrait of human activity. Cities glow bright while the wilderness remains dark. Why then is the Australian outback, lit up like a series of vast cities?

A possible sighting of Noah's Ark; the face of Jesus in a Hungarian field; and God's wrath captured in action.

American stealth technology inside China; apparent signs from lost veterans in Vietnam; a blood-red lake in Iraq.

Strange spiral markings in an African desert; a fleet of ships stranded in the middle of a desert; and huge arrows in the Badlands of the American west.

A possible sighting of Genghis Khan's lost tomb; dead patches in the desert; and the world's oldest and strangest lakes.

Strange sightings in the Bermuda Triangle; and a massive tsunami that disappeared.

A blood trail spurs a satellite investigation. Also: strange spirals in the Kalahari Desert; and a bizarre pattern off the South Korean coast.