The Embassy of the United States of America in Baghdad is the diplomatic mission of United States of America in the Republic of Iraq. Ambassador Matthew Tueller is currently the Chief of Mission.
At 104 acres (42 ha), it is the largest and most expensive embassy in the world, and is nearly as large as Vatican City. The embassy complex is about five times the size of the U.S. Embassy in Yerevan, which is the second largest U.S. diplomatic mission abroad, and over ten times the size of the U.S. Embassy in Beijing, which is the third largest U.S. diplomatic mission abroad.
The Embassy opened in January 2009 following a series of construction delays. It replaced the previous embassy, which opened July 1, 2004 in Baghdad’s Green Zone in a former Palace of Saddam Hussein. The embassy complex cost $750 million to build and reached a peak staffing of 16,000 employees and contractors in 2012