"Headquarters"? The seat of the British government is London.
It is located in Malacanang palace
hi
in korea
in Mexico city
City of Stockholm.
The Federal Government of the United States is located in Washington, D.C.
it is one of the most stable governments in the world
Wellington is the capital city of New Zealand and its seat of government.
The seat of the national government is Madrid.
This is the Palace of the Council of Ministers.
The United States Department of Treasury was established to manage the revenues of the government at a Federal level in 1789. Its headquarters are located at The Treasury Building in Washington, D.C.