Think treehouses are just backyard structures built for kids to play in? Well, think again. Constructed for different functions and in different forms, treehouses have the potential to be architectural masterpieces, much like castles. They remind us that our natural habitat was once amongst the trees.
Below, we have compiled 21 awesome treehouses that really bring this notion to life. These magnificent structures will not only leave you speechless at how amazing they can look but will also make you wish that you had these beauties in your backyard when you were little.