The Nazca Lines in Peru are massive geoglyphs visible only from the air, created between 500 BC and 500 AD.

The Han Dynasty oversaw major developments in Chinese technology.

Fact #589 · History

The ancient Roman aqueducts transported water over long distances.

Fact #1530 · History

The Battle of Actium helped determine control of the Roman world.

Fact #1436 · History

Ancient siege towers were used to scale city walls.

Fact #1447 · History

The discovery of penicillin by Alexander Fleming revolutionized medicine.

Fact #1187 · History

Ancient Assyrians were known for their advanced siege warfare techniques.

Fact #1429 · History

The Channel Tunnel links the United Kingdom and France beneath the English Channel.

Fact #1506 · History

The CIA maintained classified files on covert activities during the Cold War.

Fact #1084 · History