Today in History - March 18 | The world's biggest $780 million art heist has never been solved
No arrests have ever been made and none of the stolen artworks ever recovered.
The museum has a standing US $10 million ($15.65 million) reward for information leading the recovery of the works.
Empty frames show where many of the significant works had once been.
The value of the heist has been estimated by police at about US$500 million ($782.5 billion), but art historians say it could be even higher.
Stolen works included "Christ in the Storm on the Sea of Galilee", by Rembrandt (1633).
"The Concert", by Johannes Vermeer (1664) was also stolen. It is one of just 34 paintings officially attributed to the Dutch master.
It's been called the most valuable stolen item in the world, valued at about US$250 million ($391 million) in 2015.
Potential alleged culprits include the Boston mafia, or other local criminals.
Soviet cosmonaut Alexei Leonov performed the first spacewalk in history on March 18, 1965.
Leonov spent 12 minutes and nine seconds outside the Voskhod II spacecraft, attached to it only by a tether. His suit ballooned up against the vacuum of space, leading to some issues as he tried to re-embark the craft.
Leonov remained an icon in the USSR and Russia for the remainder of his life, going on to captain other space missions.
He died in 2019.
The New London School explosion in New London, Texas, on March 18 in 1937, killed 295 students and teachers.
Earlier that year, the school had cancelled their natural gas contract and instead hired plumbers to tap an oil company's gas pipeline, in a practice that was not explicitly organised but generally tolerated, as natural gas extracted with oil was considered waste product and flared off.
It's believed an instructor, Lemmie R Butler, turned on an electric sander, which caused a fatal spark on March 18.
Locals were on the scene in minutes, the beginning of a massive rescue and recovery effort that involved everybody from doctors to Texas Rangers to local oil workers.
Most of the victims were in years five through seven, and had to be identified by personal belongings, causing conflict between parents looking for their children.
One student survivor said his schoolmates had been reduced to "roadkill".
Nobody was held legally responsible for the incident but it sparked a major crackdown on credentials for people who claimed to be "engineers".
First Lady Eleanor Roosevelt sent a telegram conveying her condolences to the bereaved.
So, shockingly, did then-German Chancellor Adolf Hitler.
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