NASA has a building so big that it has it's own rain clouds

The Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida was completed in 1966.

It holds the record of the largest one-story building in the world. 

It is 160 meters (525 feet) tall, 218 meters (716 feet) long, and 158 meters (518 feet) wide.

It has enough space to fit the Pentagon inside and have plenty of room left over.

The VAB is so large, it has its own weather. 

On humid days, rain clouds can form below the ceiling.

It was originally built to accommodate vehicle assembly for the Apollo and Saturn missions.

 Later it underwent renovations to support the Space Shuttle.

In 2011, the VAB was modified to handle assembly of the Space Launch System.

NASA’s space-bound vehicles leave through one of the building’s four doors. 

The doors are the largest in the world.

 Each measure 139 meters (456 feet) high. 

Tall enough to easily fit the Statue of Liberty.

The doors take 45 minutes to open or close.