Headquarters (noun)

1. The central office or location from which a commander or organization controls and coordinates an activity.
2. The main or central building or place of business of an organization.

Origin:

Early 17th century: from head + quarter.

Examples:

1. The headquarters of the company was located in the city center.
2. The military headquarters was located in the fortified castle.
3. The headquarters of the organization was located in the capital.
4. The headquarters of the NGO was destroyed in the hurricane.
5. The headquarters of the rebel group was raided by the police.