US President Ronald Reagan and Soviet leader Mikhail Gorbachev signed a treaty eliminating medium-range nuclear missiles.
Source
Metallica became the first band to have performed on all seven continents when they held a concert in Antarctica.
The Clifton Suspension Bridge was finally opened.
Henry Laurens became the first person to be cremated in the US.
NASA's Galileo spacecraft made its first flyby of Earth.
A fire destroyed Vienna's Ring Theater, which killed between 640-850 people.