Duchess' Mansion 1

The Duchess' Mansion

The Duchess' Mansion is where the Duchess resided before she was beheaded by the Queen of Hearts for not properly fulfilling her duty as Alice's replacement, which caused a ruckus in Wonderland. A new duchess then is replaced by the White Rabbit where she now lives here and performs her duty.
Fish full

The Duchess' Fish Footman

This is also where Alice is brought to by the Fish Footman while he is training with his revolver as ordered by the Duchess herself.

Moreso, Alice and the Cheshire Cat were also taken here by the Duchess where they got injured so they can be cured.