Snowpoint Temple, but you must have the other three regis first.
regigigas don't have a new form in Pokemon platinum REGIGIGAS IS LEVEL ONE!!!!!!!!!!!!
you can't but you can get shaymin in sky form not regigigas.
You don't. You can only catch Regigigas in Diamond, Pearl, and Platinum.
You cannot get Regigigas in Pokémon SoulSilver, you will have to trade it from Diamond, Pearl or Platinum.
boloni!!!!!!!!!! to get regigigas you have to have regirck regice and registeel.the go to the snow point tower and theres regigigas!!!!!!!!!
get a GBA to get it
You need Rigice, Registeel, and Regirock in your party, then talk to Regigigas.
get movie regigigas.
in the snowpoint temple
regigigas is not a Pokemon you can obtain in ruby because regigigas was made in diamond and pearl and platinum so you can't get it in ruby ever.
you need to have a special regigigas in your party for them to appear. you can only get the right regigigas through an event (maybe you can also get a good regigigas with the action replay). you can only get the 3 normal regis in platinum and not in pearl or diamond.
Regigigas sky form is not real