The Shivering Isles

The Shivering Isles, also known as the Madhouse and the Asylums, is a demiplane and demesne of the god of madness, Sheogorath.

The realm consists of a main landmass surrounded by a group of smaller islands, the area of which is divided in half: the northern half of these lands is called Mania, and the southern half Dementia. This divide represents Sheogorath's split personality, the "two shades of madness". The isles are inhabited by insane mortals as well as outsiders native to the demiplane.