Inside the U.S. Embassy in Baghdad

A U.S. flag flies in front of the Chancellery building inside the compound of the U.S. embassy in Baghdad
A U.S. flag flies in front of the Chancellery building inside the compound of the U.S. embassy in Baghdad December 14, 2011. The compound, located in Baghdad's Green Zone, will be the home for thousands of American citizens left after the U.S. military completes its withdrawal this month. REUTERS/Lucas Jackson (REUTERS)

Built in 2009, the U.S. Embassy in Baghdad is the largest and most expensive of any embassy in the world. At 440,000 square meters it is nearly as large as the Vatican City. It also employs 15,000 people and cost $750 million to build.