August 3

• August 3, 1492
  Christopher Columbus sets sail from Palos de la Frontera, Spain for "Indies"
• August 3, 1553
  Mary Tudor, the new Queen of England, enters London
• August 3, 1596
  David Fabricius discovers light variation of Mira, first variable star
• August 3, 1610
  Henry Hudson of England discovers a great bay on the east coast of Canada and names it for himself
• August 3, 1692
  French forces under Marshal Luxembourg defeat a joint English-Scottish-Dutch-German army at the Battle of Steenkerque in the Netherlands
• August 3, 1778
  The Teatro alla Scala, a famous opera house, built by Giuseppe Piermarini in neo-Classical style by order of Empress Maria Theresa, is inaugurated in Milan
• August 3, 1795
  A defeated Indian coalition meat with General Anthony Wayne in a treaty council at Greenville, Ohio and cede to the United States large parts of modern-day Ohio
• August 3, 1940
  The Lithuanian Soviet Socialist Republic is officially incorporated into the Soviet Union
• August 3, 1958
  USS Nautilus, the world's first operational nuclear-powered submarine, complete a submerged transit to the North Pole
• August 3, 1960
  Niger gains independence from France
• August 3, 2005
  Mahmoud Ahmadinejad, the leader of coalition of conservative political groups, becomes President of Iran
• August 3, 2008
  A stampede at a Hindu temple at Naina Devi in Bilaspur, Himachal Pradesh, India kills 162 and injures 400