It has been 48 years since one of the most tragic incidents in the history of America: the assassination of John F. Kennedy.

Kennedy was gunned down on Nov. 22, 1963, while riding his presidential motorcade through downtown Dallas. He died of a bullet wound in the head and the presumed assassin, Lee Harvey Oswald, was murdered two days later.

As part of the commemoration ceremony, the Brookline, Mass., home of John F. Kennedy was open to the public.

Dallas authorities are planning many events in 2013 to mark Kennedy's 50th death anniversary.

The Sixth Floor Museum in the former Texas School Book Depository, from whose window Oswald fired, draws large number of visitors from across the nation throughout the year. Last year it had 330,000 visitors from 133 nations, according to Nicola Longford, executive director.