Hasentree’s playground is a one-of-a-kind adventure structure. The rope structure is for kids of all ages and focuses on upperbody strength. Not only is the playground interesting and fun, with its treehouse, bridges and rope webs, but it is also “green.” The main structure features harvested dying hemlocks, which are ultra smooth when the bark is removed. And the ground surface is rubberized mulch, which comes from recycled tires.