Throughout history, certain events have defied explanation, leaving behind only fragments of evidence, wild theories, and haunting questions that continue to captivate investigators, historians, and curious minds alike. From vanished expeditions to unexplained disappearances and baffling phenomena, these mysteries remind us how much remains unknown even in our modern world. Which of these unsolved events do you find the most perplexing and intriguing? Cast your vote and see how your ranking compares to others.
What counts: Seeded with approximate figures where shown — the crowd's votes decide the order.
D.B. Cooper▲ Rising
In 1971, a man in a suit and sunglasses hijacked a 727, extracted $200,000 in ransom, and parachuted into a stormy Pacific Northwest night — never to be seen again. Some cash later surfaced along a riverbank, but the man himself, his fate, even his real name remain totally unknown, spawning the only unsolved hijacking in U.S. aviation history. It's ranked high for sheer audacity: a criminal who pulled off the perfect vanishing act in real time, on live television practically.
Era: 1971
added by IJRin 2 rankings
The Roanoke Colony▲ Rising
In 1587, over 100 English settlers vanished from Virginia's coast, leaving behind only the word 'CROATOAN' carved into a post and no bodies, no battle, no goodbye. Four centuries of digs, DNA tests, and theories about assimilation or massacre have failed to close the file, making it America's founding mystery. It earns its spot simply because an entire colony evaporated without a scream reaching history's ears.
Era: 1587
added by IJR
The Voynich Manuscript▲ Rising
A 15th-century book written in an unbreakable cipher, illustrated with plants that don't exist and astrological charts nobody can decode, the Voynich Manuscript has humiliated cryptographers, linguists, and AI models alike for over a century. Carbon dating confirms it's genuinely medieval, ruling out simple hoax theories, yet its meaning remains a total blank. It belongs on this list because it's not a mystery of what happened — it's a mystery of whether the words themselves mean anything at all.
Era: 1400s
added by IJRin 2 rankings
The Mary Celeste▲ Rising
Found adrift off the Azores in 1872, the merchant ship Mary Celeste was seaworthy, provisioned, and utterly empty — no crew, no lifeboat missing signs of struggle, cargo intact, even a half-eaten breakfast still on the table. Theories range from mutiny to sea monsters to methane explosions, but nothing explains why an entire crew would abandon a functioning ship mid-voyage. It's a classic for the ranking because it's the ultimate 'everybody just disappeared' story, wrapped in nautical eeriness.
Era: 1872
added by IJR
Amelia Earhart's disappearance
In 1937, the most famous female aviator in the world vanished over the Pacific attempting to circle the globe, and despite sonar sweeps, island digs, and a bone fragment or two, no definitive wreckage of her plane has ever been confirmed. The disappearance turned Earhart into an eternal icon, her fate argued over in documentaries and expeditions to this day. It ranks near the top because it married real celebrity with real ocean-sized uncertainty — glamour swallowed whole by the sea.
Era: 1937
added by IJRin 2 rankings
The Bermuda Triangle▼ Falling
Ships and planes entering a loosely-defined patch of the Atlantic have allegedly vanished for decades, from the Flight 19 squadron in 1945 to the Cyclops years earlier, feeding a legend of magnetic anomalies, methane bubbles, or worse. Statistically, the region isn't more dangerous than other heavily trafficked waters, but that hasn't stopped the myth from swallowing pop culture whole. It makes the list less for hard evidence than for its unmatched cultural gravity — mystery as folklore, not just fact.
Era: —
added by IJR
In the fog of 1888 Whitechapel, an unidentified killer butchered at least five women with surgical precision, taunted police with letters signed 'Jack the Ripper,' and then simply stopped — never caught, never named with certainty. The case invented the modern serial killer myth and spawned over a century of suspects, from royals to painters to doctors, none proven. It's essential to this ranking as the original template for true-crime obsession: a monster who became a legend precisely because he got away.
Era: 1888
added by IJRJack the Ripper
The Zodiac letters▼ Falling
Beginning in 1969, a self-named killer taunted Bay Area police and newspapers with cryptic ciphers, boasting of murders and threats, some of which took decades to even partially decode. Despite modern forensic advances and amateur codebreakers cracking one 340-character cipher in 2020, the Zodiac's identity remains officially unconfirmed. Its place here is earned by the killer's chilling self-awareness — he wanted the mystery to outlive him, and so far, it has.
Era: 1960s
added by IJR
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Voted — and the gap between #1 and #2 should be bigger.
The crowd is sleeping on the bottom half of this list.
Exactly the kind of argument the internet was built for.
This order is closer to right than any editor would've gotten.