The Mystery Shed is an old shed converted into an art room. The name also refers to the tree house attached to the tree the shed was built into. 

Concept: interior of shed


The shed was presumably used previously as a storage shed for tools, and was refurbised and decorated by Mirra and Mabel, with Mabel taking credit for renaming the shed.

Probably the shed's most important role was of that in Phantom of The Art Room, where it was the building place of  the Grifficorn and where the art supplies used by Phantom Phi were stolen from.


The main use of the shed is as an art and craft room, though some characters have their own uses. For example, Dipper rarely ever uses the actual shed, but sometimes reads in the treehouse. Mirra sometimes closes the shed off to herself for unknown reasons.

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