Akebono kodomo-no-mori park, Japan. Nestled under the forested mountain ridge of Bushi yama is this curious little fairytale park for children, themed after the Finnish 'Moomin' stories. Would make lovely cob house
If you want to perform a little initiative to your children you may select wood Pallet tree house project for children. Wood pallets for children are very completely happy if you make a DIY Pallet tree house.