After years of aggressive phosphate mining, poor investments, rampant corruption, and an increasingly turbulent economy, Nauru is one of the most difficult places to live on Earth.

Located among the remains of the ancient city of Hippos, this 1,600-year-old site is marked by a unique mosaic bearing the inscription, "Peace be with the elders."

Scholars believe that both the message and the four swords found alongside it may have something to do with the Bar Kokhba Revolt that pitted the Jews against the Romans between 132 and 135 C.E.

Researchers have uncovered 592 silver denarii and 26 silver half-groschen sitting atop four gold ducats that had been wrapped in linen to keep them safe and hidden.

From 1965 to 1973, Trinh Thi Ngo, better known as Hanoi Hannah, hosted a radio segment for a North Vietnamese propaganda station that aimed to destroy the morale of American troops.

Though the entire city of Baiae sank into the Mediterranean due to underground volcanic activity, its submerged ruins remain astonishingly intact to this day.

Although the HMS Dreadnought inspired an entire generation of battleships, it never saw a naval battle itself during World War I.

In the 1920s, Route 66 was promoted as "the shortest, best and most scenic route from Chicago through St. Louis to Los Angeles," and as traffic increased, motels, restaurants, and gas stations began popping up along the road to cater to travelers.

On August 6 and 9, 1945, the United States dropped the first atomic bombs ever used in war on Hiroshima and Nagasaki, destroying the two Japanese cities and causing the deaths of hundreds of thousands of people.

Archaeologists discovered the jars inside an underground shrine found at the ancient ruins of Paestum in southern Italy.

The watchtower was part of the Danubian Limes on the northern reaches of the Roman Empire, where it was used to defend against Germanic tribes.