Backyard Adventures Advantages | Designing Your Play Area | Promotions | Installation Treehouse Series Backyard Treehouse (5' deck height) Adventure Treehouse (5' deck height) Olympian Treehouse (6' deck height) Titan Treehouse (7' deck height) Mountain Series Adventure Mountain (5' deck height) Olympian Mountain (6' deck height) Jurassic Series Adventure Jurassic (5' deck height) Olympian Jurassic (6' deck height)