Muhammad Ali fans and mourners come to pay their respects at his boyhood home in Louisville, Kentucky

Muhammad Ali fans and mourners come to pay their respects where a makeshift memorial shrine with flowers, photos, and messages on the steps of Ali's boyhood home on Grand Street. Ali, three-time world heavyweight boxing champion and gold medal winner at the 1960 Rome Olympics died June 3 in Tuscon at age 74. Tens of thousands lined the streets of Louisville to watch his funeral procession before a memorial service at the Yum! Center. (Video by Jeremy Hogan)