Have you ever considered the logistics that go into assembling NASAs gargantuan rockets? Well, it all happens in theVehicle Assembly Building (VAB)at the Kennedy Space Center.

The VAB is the only building in existencethat assembled rockets that carried humans to the surface of another world. It was completed just three years before we set foot on the Moon.

The 2,664,883 cubic meter (129,428,000 cubic feet) buildingis one of the worlds largest buildings by volume, and it is the worlds largestone-story building. It was built in the early 1960s to house Saturn V rockets of the Apollo Program, and later it was used for Space Shuttle launch configuration. Now, its being prepped to support the SLSthe rocket that may carry the first humans to Mars.

Ultimately, this building is a critical part of NASAs plans to launch humans (and equipment) into the far reaches of our solar system. But dont start packing your bags to visit; no tours are open to the public. Since 2014, it has been referred to as one of therestricted areas of Americas Spaceport

Recently though, Futurism got a peek into the VAB, and some inside information from NASA experts on what the future holds for the historic site.

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An Exclusive Look Inside The Secretive Building Where NASA Makes Rockets - Futurism