The assassination of President John F. Kennedy continues to be a source of curiosity and conspiracy theories, even though it's been 60 years since the event rocked the world. The sixth floor of the Texas School Book Depository overlooking Dealey Plaza marks the exact spot where the shot originated. Today, the Sixth Floor Museum houses more than 90,000 items connected to the Kennedy assassination. More than 350,000 guests per year make their way through the museum.