it is not really secret but there is the building in the north part of eterna city and a building in north veilstone city
Heatran is a ledgendary in Pokemon platinum.
There's no Route 505 in Pokemon Platinum.
The routes in Pokemon Platinum begin in the 200s.
There is not a route 233 on Pokemon platinum.
In The Galactic Warehouse.
Veilstone City
Looker will meet you at the warehouse and he will have the key.
in the galactic warehouse
Veilstone City
It is located in Veilstone City.
It is the warehouse in veilstone city.
one of the scientist in the galactic warehouse.
You can find it at the Galactic Warehouse in Veilstone City.
in vielstone city (were the fighting type gym is)
In the galactic warehouse to the left of the Galactic HQ
I think you need action replay. 0.o