Tidmouth Sheds are the main engine sheds on Sodor. The sheds were replaced by a roundhouse with a turntable at the front.
The sheds were demolished and rebuilt with a new architectural style and an extra berth for Emily. Diesel, 'Arry and Bert were put in charge of building them, but Thomas, believing they were destroying it, sabotaged the three, causing the engines to sleep elsewhere until it was repaired.
The turntable had frozen one time due to the icy weather, and Gordon got trapped in the sheds until it got fixed.
Many events have taken place at the sheds, such as the strike of the big engines and the confrontation between Duck, Diesel, and the big engines.