The Ruined Castle is an old castle on Sodor. A long time ago, a king and queen used to lived in it. It is currently a tourist spot for holiday makers to visit. The castle also has a shunting yard.
Once, Emily was taking visitors to the castle. But soon, she was getting bored and decided to play "Queen for the day" with Percy while waiting. However, she created a calamity when she told Percy to take his trucks on her line and he crashed into Mavis and Toby.
Thomas offered to take the storyteller here so she could write a story, but became distracted when Emily broke down.