if you past the 7th gym then go back to veilstone city then go right and the go up then you se a guy next to the galactic Veilstone building then he drop his storage key.
He is next to the satellite by the veilstone Galactic building
Beat the 7th gym leader go to veilstone and go to the HQ and talk to the grunt and he drops the key
after you've got the hidden move Strength make your way toSnowpoint city. Then you must beat the gym leader and go to Verity Lakefront, Valor Lakefront, and Acuity Lakefront. Then go outside the Veilstone HQ and get the storage key then you must go to the storage HQ in Veilstone and you will find the galactic key to the team galactic HQ in Veilstone.
it is not really secret but there is the building in the north part of eterna city and a building in north veilstone city
You have to have defeated Team Rocket in their Veilstone City HQ.
You have to go to the green house that is next to it, go to the top floor in it, then you will get it.
you use it in the galactic building in veilstone city, but only on certain doors
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.
you go to the game corner in veilstone city.
The Special Key is a key item in Pokemon Diamond. You can find this item in a warehouse in Veilstone City.
who gives a...
in galictic warehouse in veilstone city.
Near by the satellite upper part of veilstone city.
After you beat the 7th gym, Snowpoint Gym, go to Veilstone City. Go to the Veilstone Galactic Building, which is the building at the North end of Veilstone on top of the stairs. There should be a Grunt in front of the building. If you talk to him, he will drop a key to the Storage Houses. The Storage Houses are to the East of Veilstone City and is surrounded by boxes. The Galactic Key should be hidden somewhere in there.
He is next to the satellite by the veilstone Galactic building
The Storage Key opens the Galactic Warehouse in Veilstone City. It is dropped by a Galactic Grunt in Veilstone City after you beat Jupiter at lake Acuity.
Beat the 7th gym leader go to veilstone and go to the HQ and talk to the grunt and he drops the key