Sylvia Plath's husband, Ted Hughes, began an affair with Assia Wevill not long before Plath took her own life — and then Wevill died in an eerily similar manner years later.

Officially known as Megachile lucifer, this black-and-white bee has two protuberances at the front of its head that may be used to access flowers, though their exact purpose remains a mystery.

Because the necklace was in the style of mourning jewelry, researchers suspect that its owner had likely just lost someone when the doomed ship went down on April 15, 1912.

Built by attorney Phillip Weidner, the Dr. Seuss House is 185 feet tall and has stunning views of the surrounding landscape — but it's still unfinished after more than 20 years.

On August 15, 1916, Private Malcolm Alexander Neville penned this two-page note to his mother, reporting on his voyage toward Europe and asking whoever found the bottle to deliver it to her.

Due to its small, pony-sized body and horn-less skull, researchers were initially baffled as to what Epiaceratherium itjilik was, calling the creature "a little bit of a weirdo."

Emily Roebling's husband was the chief engineer of the Brooklyn Bridge, but when he fell ill soon after construction began, Emily spent over a decade working as his liaison, supervising the site, and ensuring that the structure was built to his specifications.

Enrico Tosti-Croce long believed the piece of marble his father brought back from the Acropolis of Athens in the 1930s was from the Parthenon, but experts say it's part of the Hekatompedon, which was built a century earlier.

Over 10 weeks in 1946, a predator known only as the "Phantom Killer" attacked four sets of couples in Texarkana, leaving five people dead, before vanishing completely.

Nanotyrannus lancensis was half the height of a Tyrannosaurus rex and just one-tenth of its body mass, leading it to be misidentified as a "teen rex" on multiple occasions.