Built around 126 AD under Emperor Hadrian as a temple to all the gods, the Pantheon survived the fall of Rome largely because Byzantine Emperor Phocas granted it to the Pope, who reconsecrated it as a church. This conversion is a major reason the building remains the best-preserved structure of ancient Rome, its massive unreinforced concrete dome still the largest of its kind in the world.

British-issued Enfield rifle cartridges, which soldiers had to bite open, were rumored to be greased with animal fat offensive to both Hindu and Muslim soldiers. Discontent simmering in early March 1857 among sepoy regiments in northern India became one of the immediate sparks for the widespread rebellion against East India Company rule that erupted the following May.

A day after CSS Virginia devastated the Union's wooden fleet, the Union's own ironclad USS Monitor arrived and the two armored ships pounded each other for hours with cannon fire that mostly bounced off their iron plating. The inconclusive duel nonetheless signaled a revolution in naval warfare, rendering wooden warships obsolete overnight and triggering an international arms race in ironclad design.

Following the devastating March 9-10 firebombing of Tokyo that killed over 100,000 people, US Army Air Forces turned incendiary raids toward other major Japanese industrial cities including Nagoya, home to Mitsubishi aircraft factories. The shift to low-altitude, nighttime incendiary bombing of urban areas, pioneered under General Curtis LeMay, marked a deliberate strategic turn toward attacking Japan's civilian population centers and war production simultaneously.

Metesky planted dozens of homemade bombs in theaters, terminals, and libraries between 1940 and 1956 to avenge a workplace injury and denied disability claim from Consolidated Edison. Investigators used an early form of criminal profiling, developed by psychiatrist James Brussel, to narrow the search, leading police to Metesky's Connecticut home where he calmly confessed and was later found unfit to stand trial.

Created by Ruth Handler, who named the doll after her daughter Barbara, Barbie broke from baby-doll convention by giving girls a grown-up figure with an evolving wardrobe of fashions. Early buyers were skeptical, but Barbie went on to sell over a billion units worldwide and become a cultural touchstone, lightning rod, and enduring symbol of American consumer culture.

The unmanned Vostok test flight carried a dog, mice, and a guinea pig, alongside a mannequin dubbed Ivan Ivanovich that was ejected and parachuted to Earth to test the cosmonaut escape system. Its success, following the earlier failures, gave Soviet engineers confidence to schedule Yuri Gagarin's historic flight just five weeks later.

Weeks after the Iranian Revolution toppled the Shah, Khomeini declared women should observe Islamic dress in government offices, prompting mass demonstrations by women who had supported the revolution but rejected mandatory veiling. The protests, some of the largest women's rights demonstrations in Iranian history, ultimately failed to reverse the policy as the new government consolidated control over women's dress and public life.

In the early hours after St. Patrick's Day revelry, two men posing as Boston police officers talked their way past night security guards, then handcuffed the guards and spent 81 minutes cutting paintings from their frames. Despite a $10 million reward, the stolen works, including Vermeer's 'The Concert' and Rembrandt's only seascape, have never been recovered, and the empty frames still hang in the museum awaiting their return.