Ali: Las Vegas Legacy is made possible in part by Jaguar Land Rover Las Vegas and Desert Valley Audiology.

(fight bell ringing) "I'm unique.

Look at me now.

"I look like a world champion."

-He was recognized as the most-known person on Earth.

-He became larger than life.

Countries would fight for Ali to fight there.

-I followed Ali all of my life.

I tried to follow him and do as he did.

-One of the greatest heavyweight boxers ever.

Float like a butterfly, sting like a bee.

♪♪♪ (Marc Ratner) We're talking about 1900.

We're talking about 120 years ago or more, and back then they had fights in Tonopah and Virginia City, and I believe Goldfield, little ghost towns, but they would bring thousands of people in.

They would build bleachers, and very, very big.

Boxing, combat sports is a big part of entertainment because it brings in tourism.

It brings in some of your best customers.

So these hotels, they vie for it.

They'll bid on it.

(Sig Rogich) A lot of customers would come to the casinos to go to the event and participate in the casino, so it was kind of a marketing coup to get some of those events here.

(Mike Weatherford) It's kind of the one place where the show business and entertainment and celebrity world meets the kind of tough guy world that has always been a part of Las Vegas, you know, going back to the early days.

♪♪♪ (Jared Weiss) His nicknames, the two that I know, "The Greatest" and then "The Louisville Lip," obviously because he was so personable and charismatic and always talking and always bragging.

And coming from Louisville, it made sense of the Louisville Lip.

♪♪♪ At that time when he was training in Miami, Malcolm X was the first person to introduce him to the religion of Islam.

So after the Sonny Liston fight, the championship fight, he came out as Muhammad Ali.

The prophet Elijah Muhammad gave him the name Muhammad Ali.

♪♪♪ Floyd refused to call him Ali.

He would call him Cassius Clay, and Ali would taunt him between rounds and say, call me by my name and not my slave name.

I think it's the way he phrased it.

And I think that he carried Floyd a little bit more than he needed to and sort of taunted him and beat him up.

-He loved it here and the town loved him, you know, they embraced him.

He was a superstar and we had him, so for people like me who promoted the city, you know, businesswise to have that Las Vegas dateline on every sports page in the world was a very popular thing to have for our town, a very important thing to have for our town.

♪♪♪ Ali: Las Vegas Legacy is made possible in part by Jaguar Land Rover Las Vegas and Desert Valley Audiology.