The Tanoby Chambers is a location in the Sevii Islands where you can find Unown once you've been through Tanoby Key. Certain Unown are in certain chambers. There is a pattern in every chamber. The pattern is how the walls are shaped, which is different in every chamber. As you get enough Unowns you can get another Tanoby Chamber. In this Tanoby Chamber you can get the A-form, the ?-form, and the !-form. These ruins could possibly have a link with the Johto region's Ruins of Alph.