Alluveterre

Alluveterre is the Black Swan's hideout, and the only way to get there, is through a secret passageway that only Sophie, her friends, Della, and the Black Swan know how to get to. When Sophie and her friends are isolated from society for treasonous acts, they are forced to go to Alluveterre to conceal themselves from the furious Councillors. Alluveterre was basically Sophie and her friends's second home, until the Councillor's released them from their banishment.

Everyday Housing

Alluveterre was always there to shelter and protect Sophie and her friends. When they come back from Exillium, they always go to Alluveterre, to either rest in their separate tree houses provided for them, or eat in the common house.