- 1521 - The Diet of Worms was convened to discuss Martin Luther and the Protestant Reformation in the Holy Roman Empire.
- 1573 - The Warsaw Confederation was signed, sanctioning religious freedom in Poland.
- 1820 - A Russian expedition led by Fabian Gottlieb von Bellingshausen (pictured) approached the coast of Antarctica.
- 1855 - A locomotive on the Panama Railway made the world's first transcontinental crossing.
- 1921 - A symbolic Tomb of the Unknown Soldier was installed beneath the Arc de Triomphe in Paris.
Recent days: January 27 – January 26 – January 25
More anniversaries:
- 1521 - The Diet of Worms was convened to discuss Martin Luther and the Protestant Reformation in the Holy Roman Empire.
- 1573 - The Warsaw Confederation was signed, sanctioning religious freedom in Poland.
- 1820 - A Russian expedition led by Fabian Gottlieb von Bellingshausen (pictured) approached the coast of Antarctica.
- 1855 - A locomotive on the Panama Railway made the world's first transcontinental crossing.
- 1921 - A symbolic Tomb of the Unknown Soldier was installed beneath the Arc de Triomphe in Paris.
Recent days: January 27 – January 26 – January 25
More anniversaries: