The cameras click away as Muhammad Ali arrives at the gala opening of the cultural centre opened in his honour

Hollywood actor Jim Carrey is one of the many celebrities wanting to pay tribute to "The Greatest"

Former US president Bill Clinton tells the crowd: "The world is a better place because of Muhammad Ali"

Ali watches a younger version of himself on a big screen with amazement as his daughter, Rasheda Ali-Walsh, looks on

Ali takes time out to meet and greet the mass of fans who have gathered at the opening ceremony

Britain's former heavyweight champion Lennox Lewis is all smiles as he joins the celebrations

Evander Holyfield, another former heavyweight champion and boxing great, is in an equally good mood

Howard Bingham is one of Ali's closest friends as well as his photographer

Ali's former sparring partner Greg Page waves to the fans as he makes his way down the red carpet

Ali's universal appeal sees him loved around the world, but nowhere more than his home town of Louisville