The Sinjoh Ruins can only be unlocked by obtaining an Arceus from a Wi-Fi event. By taking that Arceus to the Ruins of Alph and trying to enter the house of the scientists, you can travel to the Sinjoh Ruins by the power of Arceus. The Sinjoh Ruins cannot be found through normal game play.
She is in the Sinjoh Ruins. This can only be accessed with bringing an event Arceus to the Ruins of Alph.
the Sinjoh Ruins are only accessible with an unhacked, legal Arceus, from a Mystery Gift (not the event). Transfer from Diamond/Pearl/Platinum and bring the Arceus as your only Pokemon to the Ruins of Alph. Cynthia will appear, you will follow her and she brings you to the Sinjoh Ruins. since Arceus has only been given out as a Mystery Gift a few times, it is unlikely you will be able to get there
You can catch:-Kanto Based LegendariesArticuno Seafoam IslandsZapdos Power PlantMoltres Mount SilverMewtwo Cerulean CaveMew Special EventJohto Based LegendariesRaikou Roaming JohtoEntei Roaming JohtoSuicune Roaming Johto and KantoHo-Oh Tin TowerLugia Whirl IslandsCelebi Ilex Forest (Event)Heonn Based LegendariesKyogre Embedded Tower (Blue Orb, HeartGold)Groudon Embedded Tower (Red Orb, SoulSilver)Rayquaza Embedded Tower (Jade Orb)Deoxys Birth IslandLatios Roaming Johto and Kanto (SoulSilver) EventLatias Roaming Johto and Kanto (HeartGold) EventSinnoh Based LegendariesDialga Sinjoh Ruins (Arceus Event)Palkia Sinjoh Ruins (Arceus Event)Giratina Sinjoh Ruins (Arceus EventArceus Sinjoh Ruins (Arceus Event)*This answer has been approved and written by Wikia Lord.
Arceus is not obtainable via wild in any game except for the Azure Flute in Diamond, Pearl, and Platinum. Arceus can be obtain via the Sinjoh Ruins event, Trading from previous games (DPPt) or Action Replay DS.
The Sinjoh Ruins can only be unlocked by obtaining an Arceus from a Wi-Fi event. By taking that Arceus to the Ruins of Alph and trying to enter the house of the scientists, you can travel to the Sinjoh Ruins by the power of Arceus. The Sinjoh Ruins cannot be found through normal game play.
There isn't such a thing as the Sinnoh Ruins. However, there is a Sinjoh Ruins. You can get there by taking an Arceus to the Ruins of Alph. Put Arceus first in your party and go outside the Research Lab. A man will come out. Follow him to get to the Sinjoh Ruins.
She is in the Sinjoh Ruins. This can only be accessed with bringing an event Arceus to the Ruins of Alph.
The Sinjoh Ruins are in a far away and unknown place. You are teleported there by Arceus when you try to enter the house of the scientists in the Ruins of Alph with an event Arceus. It is not known exactly where they are, but the ruins are not close to the Kanto or Johto regions.
The Sinjoh Ruins are the ruins that you can access if you have an Arceus from a Wi-Fi event. They are ruins where you meet Cynthia, the Sinnoh champion, who explains to you that Arceus' power can revive a level 1 Giratina, Dialga, or Palkia. You get to choose which one to revive there.
the Sinjoh Ruins are only accessible with an unhacked, legal Arceus, from a Mystery Gift (not the event). Transfer from Diamond/Pearl/Platinum and bring the Arceus as your only Pokemon to the Ruins of Alph. Cynthia will appear, you will follow her and she brings you to the Sinjoh Ruins. since Arceus has only been given out as a Mystery Gift a few times, it is unlikely you will be able to get there
In the English version, it's Sinjoh ruins. You have to have an arceus from the event and trade it over from DP.
The Dialga you receive in the Sinjoh Ruins is holding one. To get Dialga, you need to bring Arceus to the Ruins of Alph. To get Arceus, you need to trade or wait for an event.
You can only get one in Sinjoh Ruins. You get there by having Arceus in your party. (The wifi event for Arceus is over so it is currently inaccessible)
you have to have the toys-r-us event arceus and go to the archeoligist in the ruins of alph. he will take you in the rooms and you will transport to the ruins of sinjoh.
the only way to get to the sinjoh ruins is with a 12th movie edition arceus which can only be attained by an event (which is long gone) or action replay it, one from another game will not work. You'll know if you have the right one because it's moves are: Judgement, Roar of Time, Spacial Rend and Shadow Force
You don't need a special Arceus for the Sinjoh Ruins event in HeartGold/SoulSilver, you can use a regular one that you caught in the Hall of Origins as well.