You Can't... that's in Pokemon diamond/pearl/platinum
To get to the snowpoint city temple you have to beat the Pokemon legue champion first you also need to have regirock, regice and registeel but to have these Pokemon you will have to trade from ruby, emerald or sapphire
Yes by migrating the 3 regis from Pokemon ruby,Sapphire,and emerald and taking them to the snowpoint temple
You need to transfer the 3 Regis from Ruby, Sapphire and Emerald and take them to the Snowpoint Temple, Regigigas will wake.
It is at the top of Snowpoint City!!!
To get Regigigas in Diamon, Pearl or Platinum, you must go to Snowpoint temple with all 3 of the other regis: Regirock, Registeel and Regice. These can be obtained by transferring them from other Pokemon games such as ruby, sapphire and emerald :)
here is a hint he is in a place where a lady does not let you enter ok he is in the snowpoint temple in snowpoint city you only get him by migrating rigirock rigice and rigisteel (national dex)from sapphire and beating the Pokemon league
Regigigas is the Pokemon found at the snowpoint temple but you need to already have regirock, registeel, and regice to catch it.
No you can't but you can get them in Platinum Emerald Ruby & Sapphire I think so or maybe Firered & Leafgreen too you can only get Reggigigas in Pokemon diamond in the snowpoint temple.
snowpoint temple
The only way you can get into Snowpoint Temple is by having the three regis in your party. SLICK
Pokemon # 486. Regigigas. Get him in Snowpoint Temple, but you need to have the three Regis (Regirock, Registeel, Regice) in your party, and you have to trade them from the Ruby, Sapphire, or Emerald games.
To awaken Regigigas you need to migrate from Ruby/Sapphire/Emerald the three Regis.