On this day in 1953, US Senator and future President John Fitzgerald Kennedy married Jacqueline Lee Bouvier at St. Mary's Church in Newport, Rhode Island.
On this day in 1977, South African anti-apartheid activist Steve Biko died in police custody.
On this day in 1990, the two German states and the Four Powers signed the Treaty on the Final Settlement with Respect to Germany in Moscow, paving the way for German reunification.
And on this day in 2011, the 9/11 Memorial Museum in New York City opened to the public.