The Galactic HQ is in the northeast corner of veilstone city. You can only explore it after you beat the seventh gym. All you have to do is FLY to Veilstone City; Go down the stairs and turn on the road to your right (east); At the end of the road go up (north) and follow the road to a staircase going up. This brings you to a huge building - The Galactic Headquarters.
With the Galactic key you can unlock any locked doors in the headquarters.
somewhere
that is actually true wshere is he well of course he at galactic headquarters
You find it in the Galactic Headquarters after they capture Azelf, Uxie, and Mesprit.
you go to spear pillar to catch dialga/palkia
Galctic Headquarters is actually the Team Galactic Veilstone Building, but you'll need a Galactic Key to enter most of the doors.
frst defeat the gym leaderthen go to the team galactic headquarters the one that is small. then when you have accomplished that you can go there!
galactic headquarters
you find it in the galactic HQ
You may not join Team Galactic in Pokemon Pearl or Diamond.
You have to go to Veilstone City to the headquarters of Team Galactic. and the man before the headquarters has the Storage Key. with this key you have to go to the Warehouse (at the top on the left side), also in Veilstone City.
It's in veilstone city.