History’s biggest discoveries aren’t always its best. A diamond heist that unravels in a ditch, a colossal burning crater dubbed the “Gateway to Hell” and an island dominated by venomous vipers prove that when finds go big, they can also go very bad.

From a live WWII bomb discovered decades later to a Civil War cigar hiding secret orders to a Viking sword unearthed by a child. These finds reveal how the remnants of war can resurface when least expected.

From Mussolini's hidden bunker to a warship built to dominate and coins bearing Henry VIII's authority. These discoveries reveal how power leaves its mark long after its rulers are gone.

Some discoveries defy explanation, like fossilized vomit from the Jurassic era, a sewer blob with a pulse, even a long-lost toy discovered inside a man's lung. These freaky finds prove that reality can be stranger-and far creepier-than fiction.

We explore some of the most valuable treasures found in the most unlikely of ways. Like a priceless Ancient Roman mosaic hiding in a New York city apartment, or the most valuable piece of Americana tucked away in a $4 flea market find. You never know where the next million-dollar discovery could be uncovered.

Gold that ruins lives, a cursed wreck beneath the sea, and a hidden safe linked to a famous burglar, show how the past can be as dangerous as it is tempting.

From a long-lost keepsake tied to the world's most famous astronaut, to a giant flying reptile that once ruled the skies, and even a previously unknown planet orbiting two suns…some extraordinary discoveries remind us to keep looking up.

From James Bond’s legendary submarine car uncovered in a storage unit, to a rock-and-roll guitar with a past as loud as its sound, and locomotives resting on the ocean floor, these heavy-metal marvels prove history’s strongest secrets can’t stay buried.

From a $4 flea market frame concealing the Declaration of Independence, or a lost Fabergé egg in a Midwest flea market and even the holy grail of comic books hiding in someone's wall, we revisit the most astonishing, valuable discoveries.

From a revolutionary war era ship hiding under the streets of Manhattan, to a sprawling Roman villa unearthed in the backyard of an English home, or even an ancient Grecian maze long thought to be a myth--the strange structures uncovered in this episode sometimes lead to more questions than answers.

From a Chinese curse that turns out to be real, to human remains in a Founding Father's basement, or even a mysterious island in Central Asia with enough pathogens to kill the entire global population several times over.

From priceless treasure found inside a lost city, to an ancient manuscript hidden behind a wall, explore mysterious secrets lost deep inside various unseen chambers, like tunnels, caves, or even burial sites.

Secrets of popes, rewritten laws, and cities lost to the waves — these divine discoveries shake our beliefs and uncover mysteries of truly epic proportions.

From ancient religious texts buried in Egypt to cultural relics found at sea, or even a tower of skulls hiding under the earth, these lost artifacts change what is known about certain sacred beliefs.

From clandestine nuclear weapons programs to a secret Cold War bunker hidden in the mountains, or even World War 2 technology at the bottom of the sea, we explore the unlikely people, and surprising places behind the discoveries of the most top-secret information.

The world's greatest fortunes often surface in the most unlikely places. From a Fabergé egg found at a humble flea market, to rare baseball cards hidden inside an old piano.