Ruins Of Alph

13 Pokémon can be caught at Ruins Of Alph in Johto — highlighted on the map below.

Near Violet City, with entrances off Route 36 and Route 32, the Ruins of Alph are an ancient site studied by resident scientists. Four small chambers hold slide puzzles; solving one drops the player into an underground hall and awakens a corresponding set of Unown, with all four puzzles needed to unlock every one of the 26 alphabetic forms. Radio channel 13.5 broadcasts a strange Mysterious Transmission nearby. In HeartGold and SoulSilver, bringing a special Arceus here triggers a journey to the Sinjoh Ruins.