Where is the dilapated castle in dragon quest 8?

In "Dragon Quest VIII," the dilapidated castle is located in the region known as the "Trodain Region." Specifically, it is found to the southeast of the Trodain area, near the town of Trodain. This castle, once a grand structure, serves as a significant location in the game's storyline and is key to the protagonist's quest. Players can explore its ruins to uncover important plot elements and items.