By far Gustave Eiffel’s most well-known work, the Eiffel Tower was designed for the 1889 World’s Fair to celebrate the 100th ...

Along with a history of racist wartime propaganda, other forms of hateful posters and political flyers were persistent throughout the 20th century. The infamous white supremacist group Ku Klux Klan ...

Between 1971 and 1973, an unknown serial killer in Rochester, New York strangled three girls who had the same first and last initial in what’s known as the Alphabet Murders.

The Sea Peoples terrorized Egypt and the Mediterranean during the Bronze Age, but their identity and origins remain mysterious to this day.

Philip Chism was just 14 when he murdered his 24-year-old math teacher Colleen Ritzer at Danvers High School before dumping her corpse behind the school.

First opened in 1970 and shut down in 2011, the Élan School was the "last resort" for parents of teens with behavioral problems — and allegedly a site of systemic abuse. For some, the idyllic woods of ...

These photos of the Dyatlov Pass Incident document the days leading up to the mysterious deaths of nine young hikers — and the investigation into their gruesome deaths.

More On The Curious Cubic Houses Of Rotterdam Completing the tilted design, the walls and windows are all angled at 54.7 degrees, providing excellent views of the surrounding area. The only drawback – ...

Since 2011, investigators have considered every scenario regarding Phoenix Coldon's disappearance. From sex trafficking enslavement to purposefully running away — or being murdered.

From declarations of love and remembrances of old friends to hilarious insults directed at locals, the Pompeii graffiti preserved since 79 A.D. is a raunchy sight.

In 1900, the lighthouse keepers on a remote Scottish island vanished. The official report called it an accident. But suspicious clues – and a puzzling logbook – point to a darker explanation.

In celebration of the vast unknown of Earth's oceans, we present of our favorite fascinating and amazing facts about ocean animals!