Atheia was the capital city of the Old Kingdom, which was ruled by the Royal House of Harvestar. Atheia was viciously attacked during the Nights of Lightning by the rat creatures. It was abandoned by the Royal Family, to save Thorn. Later onwards, Thorn takes her rightful place as Queen of Atheia and the rest of the Kingdom.
The walls around Atheia were built by Grandma Ben, and many parks and libraries were built by Queen Lunaria, Thorn's mother.