The house is created by Ian Worrel.
Take a look at this magical Mystery Shack from Gravity Falls created by Art Director Ian Worrel using Blender, Gravity Sketch, After Effects, and Photoshop.
The diorama is made for the 10 year anniversary of Gravity Falls. Worrel shared that he helped design the shack in the early days of development and the team "treated it like a main character."
This was also a process exercise exploring new tools and techniques in VR, Blender, After Effects, and projection painting.
Here are some backgrounds Worrel created for Gravity Falls when he was an art director there:
You can find more great projects on ArtStation.