Tanoby Ruins

13 Pokémon can be caught at Tanoby Ruins in Kanto.

The Tanoby Ruins consist of seven small islets scattered across a calm sea off the seventh of the Sevii Islands. A Ruin Maniac claims the site has stood for more than 1,500 years for unknown reasons. The area holds little of interest until the Tanoby Key puzzle is solved, after which the chambers fill with Unown, catchable in all 28 of its forms, while ordinary Water-type Pokémon swim in the surrounding sea.