An exploding cannon killed 6 people, including members of President John Tyler's cabinet.
All in War
The Emperor's Collar
János Libényi was executed on this day, a little over a week after he tried to kill Austrian Emperor Franz Josef.
The Battle of Los Angeles
At around 3 o'clock in the morning, residents were rattled out of bed by the loud thumps of anti-aircraft guns lobbing 12-pound shells into the sky.
Japanese Sub Attacks Santa Barbara
This was the night that a Japanese submarine attacked an oil refinery near Santa Barbara, California.
The White Rose
"...what does my death matter, if through us thousands of people are awakened and stirred to action?"
Tecún Umán
On this day the last King of the K'iche' Maya people was killed during a battle in what is now Guatemala.
The Four Chaplains
On this day four men of different faiths gave their lives so that others might live.
Siege of Leningrad
It remains history's deadliest blockade of a major city, with over a million civilians killed.
Project Crested Ice
A bomber carrying four hydrogen bombs crashes, scattering radioactive debris across miles of sea ice.
The Fraunces Tavern
For hundreds of years this corner of Manhattan has hosted the movers and shakers of American history through triumph and tragedy.
Sub vs Mountain
At about 2 in the morning the bow of the sub plowed into a wall of rock and mud.
Wovoka
On this day a medicine man of the Nevada Paiutes called Wovoka had a powerful vision during a solar eclipse.
Eggnog Riot
This was the Christmas when all hell broke loose at West Point Military Academy.
NUTS!
American forces were surrounded by the Germans during what has become known as the Battle of the Bulge.
The Plot to Burn New York
The desperate plan to set the Big Apple ablaze.
Bones of the Magi
Cologne Cathedral would take over 600 years to complete. The main purpose was to provide a suitable home for the Shrine of the Three Kings.
Nelson's Right Arm
In 1797, Today was the day that Rear-Admiral Horatio Nelson lost his right arm during his attack on the Spanish port city of Santa Cruz de Tenerife in the Canary Islands.
Trinity Test
It was the first successful test of an atomic weapon.
Yagan's Head
The warrior's head was severed and began a 177-year odyssey.
Death in the Mess
Dale Buis and Chester Ovnand are the first of over 58,000 names on the Vietnam War Memorial.