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.

President John F. Kennedy
President John F. Kennedy speaks to a rally in Fort Worth, Texas, several hours before his assassination on Nov. 22, 1963. Reuters
President John F. Kennedy indicates that his wife, first lady Jacqueline Bouvier Kennedy, is still inside the hotel behind him.
President John F. Kennedy indicates that [his wife, first lady Jacqueline Bouvier Kennedy], is still inside the hotel behind him as he attends a political rally in Fort Worth, Texas several hours before his assassination in this November 22, 1963. Reuters
President John F. Kennedys widow, Jacqueline Bouvier Kennedy, stands with their young son John F. Kennedy Jr. and daughter Caroline.
President John F. Kennedy's widow, Jacqueline Bouvier Kennedy, stands with their young son John F. Kennedy Jr. and daughter Caroline as they watch the president's casket depart the White House in a cortege bound for the U.S. Capitol in this November 24, 1963. Reuters
President John F. Kennedys brother, U.S. Attorney General Robert F. Kennedy, his sister Patricia Lawford, his daughter Caroline Kennedy, his widow Jacqueline Bouvier Kennedy and his son John F. Kennedy Jr.
President John F. Kennedy's brother, U.S. Attorney General Robert F. Kennedy, his sister Patricia Lawford, his daughter Caroline Kennedy, his widow Jacqueline Bouvier Kennedy and his son John F. Kennedy Jr. depart the U.S. Capitol after accompanying the president's casket to the Capitol rotunda in this November 24, 1963. Reuters
The cortege carrying the casket of President John F. Kennedy
The cortege carrying the casket of President John F. Kennedy departs the White House bound for the U.S. Capitol on November 24, 1963. Reuters