The Forbidden Castle: Story No. 23 of Book 2 of The THOUSAND and One DAYS (The THOUSAND and One DAYS: Book 2) (Volume 23)

Once upon a time, there was a castle that had been cursed with its master. The curse would break when a future heir had the courage to go find it, and enter through its doors. But no one would ever find it because it was invisible until the heir would go and....