Palace de Brandefort
From Equestripedia, the Archives of Equestria!
The palace of Prince Philip lived in appeared be settled in the capital of his kingdom. Although a palace and not a castle, the palace contained many castle-like features, such as a throne room and a dungeon. The palace was eventually ceased by Duchess who banished away Prince Philip and his sister to the dungeons. Eventually with the help of the ponies, Philip and his sister overthrew the Duchess and once again ruled in the castle as brother and sister.
