Agitha's Castle is a location from The Legend of Zelda: Twilight Princess. It is a building located in the southern part of the eastern alley of Hyrule Castle Town. Agitha, self-proclaimed "Princess of Bugs," lives here, together with her pet bugs. Despite its name, Agitha's Castle is no bigger than most other buildings in Hyrule Castle Town and has little to none of the trappings usually found in a castle.

The interior of Agitha's Castle is made up of a lower level and an upstairs that can only be accessed via ladder. In the center of the home is a tree that sticks out through the floorboards and extends to the roof. Agitha can be found on the first floor, awaiting the guests for a party she is holding. Her "guests" are the various Golden Bugs found throughout the land of Hyrule; therefore, when Link collects some Golden Bugs and gives them to Agitha, they will appear in the house from that point forward.

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