These bewildering out-of-place artifacts, or OOPArts, often seem too advanced for their time and place, leading to wild theories about advanced ancient civilizations and even aliens.

Some are believed to have been executed by gibbeting, in which the condemned was suspended above the ground while wrapped in chains, leaving them to die slowly of starvation or exposure as passersby watched their suffering.

Ever since the Grateful Dead debuted in the 1960s, they've counted a massive following of enthusiastic fans, the most devoted of which are known as Deadheads.

For nearly two decades beginning in the 1960s, neo-fascist militants and far-left organizations carried out bloody attacks across Italy in an effort to destabilize the government.

This "Good Shepherd" depiction shows Jesus tending to rams, sheep, and goats, something rarely seen in Christian iconography today.

Brachycephalus lulai is less than half an inch long and lives in a three-square-mile area of southern Brazil's Serra do Quiriri mountain range.

Legendary rock drummer Keith Moon died in London on September 7, 1978 after accidentally overdosing on a sedative meant to help with his alcoholism.

"Chopper" Read was a mob enforcer and contract killer who prided himself on only bringing harm to fellow criminals — then he became a bestselling author while still behind bars after writing a memoir about his deadly exploits.

Shannon Hoon was just 28 when he overdosed on cocaine in his band's tour bus after a years-long struggle with addiction.

Thousands of Indigenous artifacts found along the Rappahannock River provide physical evidence of the villages written about by English explorer John Smith in 1608.