Was it real?

One author's bestselling claim that aliens built the pyramids has sold over 65 million books — and mainstream archaeologists say every specific claim in it has a much simpler, well-documented explanation.

The most famous footage supposedly proving Bigfoot is real has never been definitively debunked — but one of the men who filmed it also never definitively proved it either.

A winged, red-eyed creature terrorized a small West Virginia town for over a year — then a bridge collapsed and it was never seen again.

The most famous photo of the monster was a confirmed hoax — a toy submarine with a sculpted head — but sightings never stopped.

An Ohio police officer filed an official report claiming he'd shot at a frog-like humanoid creature crossing the road — a real documented police record that helped a small town's local legend become one of America's most enduring cryptid stories.

Australia has its own Bigfoot — an ape-like creature reported in the outback for over 200 years, with the earliest documented sightings actually coming from Aboriginal oral tradition long before European settlers arrived.

A family on a remote British island spent years insisting they lived with a talking, singing mongoose who claimed to be an "extra clever" spirit — and a respected paranormal investigator traveled there specifically to examine the claim, coming away without a clean explanation.

A respected professional mountaineer climbing Scotland's second-highest peak in 1891 became so certain something enormous was stalking him just out of sight that he refused to discuss the experience publicly for over 30 years.

Victorian London was gripped by panic over a mysterious figure who could reportedly leap over walls and fences with inhuman ability, breathe blue flames, and vanish into the night — and the case was significant enough to be raised at a formal public meeting.

A rural Wisconsin road became the center of dozens of real, independently filed sighting reports of a bipedal, wolf-like creature in the late 1980s and 1990s — enough that a local newspaper reporter's investigation turned into a bestselling book.

New Jersey's most famous cryptid legend claims a woman gave birth to a creature that flew up the chimney and has haunted the Pine Barrens ever since — and it's popular enough that an entire NHL hockey team is named directly after it.

A father whose two young daughters died in a car accident had two more daughters the following year — who, as toddlers, began describing specific memories, scars, and toys belonging to the sisters they had never met and were never told about.

Four teenagers in a small Massachusetts town independently described the exact same bizarre creature over a single 24-hour period in 1977 — then it was never reported again, anywhere, before or since.

A Tennessee family reported years of documented poltergeist activity so severe it allegedly killed the family patriarch — and future president Andrew Jackson reportedly visited the farm himself to investigate, later saying he'd rather face the British army again.

19th-century Australian newspapers ran genuine, detailed reports of a monstrous creature attacking colonists near rivers and swamps — and scientists of the era took the claims seriously enough to formally examine and debate an actual claimed skull.

A Harvard ethnobotanist tracked down a real Haitian man who had been legally declared dead and buried in 1962 — then found walking around his home village 18 years later, and built a real scientific case for how it might have happened.

An Algonquian legend about a cannibalistic monster born from starvation and greed became so culturally embedded that Canadian courts once formally tried a real man for killing someone he genuinely, delusionally believed had transformed into one.

For decades, climbers and scientists treated Yeti sightings as a real open question worth investigating — until DNA testing of claimed "Yeti" hair and remains kept coming back as the same, much less mysterious animal.

For decades, UFO witnesses have reported being visited by unsettling strangers in identical black suits who warn them into silence — and the legend traces back almost entirely to one man's increasingly strange, self-published claims.

A legendary blood-drinking creature that terrorized Puerto Rico in the 1990s may have started with one horror movie fan's exaggerated description — and every captured 'chupacabra' since has turned out to be a mangy coyote.

In 1951, a Florida woman was found reduced almost entirely to ash in her own armchair — while the chair itself barely burned.

150 ships and planes gone — or just really bad luck?