Introducing the Wooden Castle With Working Door. This Wooden Castle is a great addition to any Play Therapist collection. This Wooden Castle measures 12" Long by 12" Wide by 4" High Walls. The door measures 8" High by 8" wide, with a hinged door that opens and closes. Made from a high quality White Poplar Wood, used extensively in Amish Crafted Wooden Toys as the White Poplar Wood is a softer smoother wood that is great for toys.