Headquarters

n. pl.	1.	The quarters or place of residence of any chief officer, as the general in command of an army, or the head of a police force; the place from which orders or instructions are issued; hence, the center of authority or order. The brain, which is the headquarters, or office, of intelligence. - Collier.
	2.	The main office from which an organization such as a commercial enterprise is managed; - usually where the chief executive officer works.

Noun	1.	headquarters - (usually plural) the office that serves as the administrative center of an enterprise; "many companies have their headquarters in New York" Synonyms: central office, home office, main office, home base
	2.	headquarters - (usually plural) the military installation from which a commander performs the functions of command; "the general's headquarters were a couple of large tents" Synonyms: HQ, military headquarters
	3.	headquarters - (plural) a military unit consisting of a commander and the headquarters staff

CP, GHQ, HQ, base, base of operations, booking office, box office, branch, branch office, cabinet, center of authority, central administration, central office, central station, chambers, chancellery, chancery, closet, command post, company headquarters, consulate, corporate headquarters, den, embassy, executive office, general headquarters, home office, legation, main office, office, seat, shop, study, ticket office