"HEADQUARTERS"?

WHAT ARE THE "HEADQUARTERS"?

"Headquarters" is a word that quite a few Spanish people don't know. Higher level students probably know it but it is less likely that beginners or intermediate students know what it means.

Just to expain it quickly: The headquarters of a company is the place where the main directors and the CEO (chief executive officer) are located.

It is also where all the main decisions and strategy for the company is decided. How do you say "headquarters" in Spanish?