The NSA's New Spy Facilities are 7 Times Bigger Than the Pentagon

He works at one of the three-letter intelligence agencies and oversees construction of a $1.2 billion surveillance data center in Utah that is 15 times the size of MetLife Stadium, home to the New York Giants and Jets. Long Island native Harvey Davis, a top National Security Agency official, needs that commanding presence. His role is to supervise infrastructure construction worldwide for NSA, which is part of the Defense Department. That involves tending to logistics, military installations, as well as power, space and cooling for all NSA data centers. 

In May, crews broke ground on a $792 million computing center at the agency's headquarters near Baltimore that will complement the Utah site. Together the Utah center and Maryland's 28-acre computer farm span 228 acres—more than seven times the size of the Pentagon. 

http://www.defenseone.com/technology/2013/07/nsas-big-dig/67406/