Every year, a new maze. Here are some recent designs:
2002 The Babe
Yahoo - 2008 The Odyssey (Cyclops)
Bing - 2010 Campbell's Tomato Soup
Google - 2011 Noah Webster
Pictured is building TAN-629, a large, 350-foot (106.7 meter-) wide hangar built at Test Area North. More recently (since 1985), this has been known as Specific Manufacturing Capability, which uses depleted uranium to manufacture armor plating for the M1-A1 and M1-A2 Abrams tanks.