[Source] The Mystery Shack is a tourist trap in Gravity Falls, Oregon in the show Gravity Falls. It overcharges unlucky visitors for a glimpse at the world's most bizarre museum. This museum is owned and inhabited by Grunkle Stan, and is the main base for Dipper and Mabel throughout the series. It is also their home during their vacation in Gravity Falls. Wendy Corduroy and Soos Ramirez are also employees of the Mystery Shack.