May 27: Children's Day in Nigeria
- 1328 - Philip VI of France was crowned at Notre-Dame de Reims, beginning the Valois Dynasty.
- 1860 - Italian unification: Giuseppe Garibaldi and his Redshirts launched their attack on Palermo, capital of the Two Sicilies.
- 1919 - The flying boat NC-4 arrived in Lisbon, Portugal, becoming the first aircraft to complete a transatlantic flight.
- 1937 - The Golden Gate Bridge (pictured), a suspension bridge spanning the Golden Gate in California, was opened.
- 1942 - Operation Anthropoid: Czech resistance fighters in Nazi-occupied Prague ambushed and mortally wounded Reinhard Heydrich, the chief of Reich Security Main Office and the Protector of Bohemia and Moravia.
May 27: Children's Day in Nigeria
- 1328 - Philip VI of France was crowned at Notre-Dame de Reims, beginning the Valois Dynasty.
- 1860 - Italian unification: Giuseppe Garibaldi and his Redshirts launched their attack on Palermo, capital of the Two Sicilies.
- 1919 - The flying boat NC-4 arrived in Lisbon, Portugal, becoming the first aircraft to complete a transatlantic flight.
- 1937 - The Golden Gate Bridge (pictured), a suspension bridge spanning the Golden Gate in California, was opened.
- 1942 - Operation Anthropoid: Czech resistance fighters in Nazi-occupied Prague ambushed and mortally wounded Reinhard Heydrich, the chief of Reich Security Main Office and the Protector of Bohemia and Moravia.