King George VI officially opened the 11th modern-day Olympic Games at the Wembley Arena in London, UK.
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Sir Robert Baden-Powell established the Boys Scouts in England.
Arc de Triomphe in Paris became the world's largest triumphal arch at 164 ft tall.
President Dwight D. Eisenhower signed the National Aeronautics and Space Act, which became NASA.
Prince Charles and Lady Diana Spencer got married at St. Paul's Cathedral in London.
Renegades of the Abbasid Caliphate captured Thessalonica, which is modern-day Thessaloniki, Greece.
