Another magical tale by E. Nesbit, author of the "Five Children" adventures. Typically British in tone, this book is about children who come across a "castle" held by a "princess" (really just a stately home with a rich inhabitant) and their "magical" adventures. A fun read, though the British-ness of the dialogue and situations (where is the nanny of these children, as the parents definitely aren't in the story?) takes some getting used to.
For all that this Edith Nesbitt wrote around a century ago, I find the humor in her books and her grasp of human foibles delightful. I never knew about Nesbitt until I was an adult and married, but I have greatly enjoyed reading them.