Tidmouth Bay is a station and castle located on Toby's Branch Line near the old mine. It only appeared in the fifth and sixth seasons and in stock footage in the seventh season. The castle was found by Toby and Sir Topham Hatt after his grandchildren showed him a map featuring the castle.
In the sixth season, an additional island platform and tracks were added. Alicia Botti and the Sodor Brass Band have been known to perform here.
- The station shares the same design as Maithwaite station.