Ruins

Ruins has several referrals:

• Ruins of Alph, from Pokémon Gold, Silver, and Crystal, and Pokémon HeartGold and SoulSilver.
• Sinjoh Ruins, from Pokémon HeartGold and SoulSilver.
• Tanoby Ruins, from Pokémon FireRed and LeafGreen.
• Solaceon Ruins, from Pokémon Diamond, Pearl, and Platinum.
• Abyssal Ruins, from Pokémon Black and White.
• Celestic Ruins, in a cave in the middle of Celestic Town, from Pokémon Diamond, Pearl, and Platinum.
• A group of locations in Pokémon Ruby, Sapphire, and Emerald, where the Legendary titans may be caught:
  • Desert Ruins
  • Ancient Tomb
  • Island Cave
• A group of locations in Pokémon Platinum, where the Legendary titans may be caught:
  • Rock Peak Ruins
  • Iceberg Ruins
  • Iron Ruins
• A group of locations in Pokémon Sun and Moon, where the guardian deities may be caught:
  • Ruins of Conflict
  • Ruins of Life
  • Ruins of Abundance
  • Ruins of Hope
• A group of anime-exclusive locations that are periodically encountered by Ash and his friends.
  • The ruins of the city of Pokémopolis
  • Oldale Ruins
  • The ruins of the civilization of Pokélantis
  • Summit Ruins
  • The ruins on Dandelion Island
• A group of Friend Areas in Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team. The group consists of the following Friend Areas:
  • Decrepit Lab
  • Power Plant