Petit pulled a coup of sorts in 1974 by shooting a wire between the newly constructed Twin Towers of New York and walking on them for about 45 minutes.
Gordon-Levitt said he did not believe the French artist when he promised him to teach the art of wire walking in just a week.
"Philippe actually insisted that he be the one to teach me to walk on the wire. And he and his partner Cathy set up this elaborate workshop. He does everything elaborately. And he found this old unused warehouse face and set up a real steel cable and then some different practice "apparatai" that I learned on.
Zemeckis, famous for bringing hits like "Back to the Future", "Forrest Gump", "Cast Away", "What Lies Beneath" and "Death Becomes Here", was fascinated by Petit's stunt and decided to recreate the event in his the film, which, he says, is a love letter to New York and particularly the Twin Towers that were destroyed in the 9/11 terrorist attack.
"... For me the most important thing in deciding what acting job I want to do and I'm really lucky that I get to have some say in that decision, these days is the director. That's the most important thing to me.
"I've always loved his movies. Everything from 'Back to the Future', all the way up through 'Flight', I've always loved his movies. And it can be risky to meet someone that you've always admired. But Bob really just warmed my heart in how generous and collaborative a person he was to work with," said the actor.
