He's a real-life superhero!

Tom Cruise risked his life performing stunts for Mission: Impossible 4 in Dubai over the weekend: the star, 48, dangled almost 2,717 feet in the air near the top of skyscraper Burj Kahlifa, the tallest building in the world.

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On Saturday, fans and photographers watched as the married father of three hung from a wire near the building's observation deck, which is 124 stories high.

Clad in black, Cruise ran across the windows of the towers as nervous crewmembers looked on from nearby open windows, reports the Daily Mail.

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"There's always that adrenalin before you do a stunt," the death-defying star told the Daily Record this past summer. "I want to entertain the audience, and part of making these movies is doing my own stunts."

Mission: Impossible 4 -- in which Cruise plays agent Ethan Hunt -- hits theaters early next year.

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