headquarters

noun3

1. •
   the center where the leaders of a company or other group work and make its decisions

   • As though on an incendiary rampage, the fires systematically devoured the contents of Edison's headquarters and facilities. — 2006
2. •
   The military installation from which troops are commanded and orders are issued; the military unit consisting of a commander and his support staff.
3. •
   A place of concentrated activity or influence.

   • The head-quarters of the rebellion in the East were at a little town called Hui-lung. — 1888