Saturn V's rocket, which brought the first men to the Moon, was as tall as a 35-story building. This rocket was built into an assembly building so large that several of these huge rockets could easily fit into it in a vertical position.
This structure, called the Vehicle Assembly Building, or VAB, is in Cape Canaveral, Florida. It covers ten acres - almost nine soccer fields - and rises to the height of a 50-story building, making the VAB the most spaciously built interior building ever.
When the rockets were finished, they were moved from the VAB through gigantic gates that were 140 meters high - the largest gates ever built.
The VAB is the largest single-story building in the world, and was Florida's tallest building until 1974, and is still the tallest building in the United States outside of an urban area.
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