Ministry of the Interior, Berlin, Germany
Note: Working in a foreign government after working in US Government highlighted some inefficiencies in how both sides do business. For example, in Germany government workers are entitled to a window in their office. Working in the US government, when I was last promoted, it was to a windowless office from a cube. Did this affect my productivity? I think so. Does it cost the German government a lot more money to give everyone natural light? I bet.