I wish they had these when I was growing up! I stumbled upon this company Wooden Wonders and fell in love with their creative workmanship and their take on outdoor play structures. This one was built into the landscape to fully integrate into an outdoor space.
The inside is equaly well crafted and offers a unique version to the old school fort. Mom can now take a break as her kids play for endless hours in their hobbit hole! Now that's happy!