As it turns out, treehouses aren’t just for kids anymore. Once upon a time, treehouses were small, tight spaces in which children could hang out away from their parents, out of their direct line of vision. Treehouses often served as a secret clubhouse of sorts, where battle of the sexes seemed most prominent – most treehouses adorned with “No Girls Allowed” or “No Boys Allowed” signs. However, the Treehouse djuren isn’t just for kids. It brings an updated, modern design to the table that will please even adults.