This octagonal barn tree house was inspired by the old barn house it sits next to at the customer's home. We topped it off with a cute little cupola and wrap around porch. We even weathered the paint to give it a rustic, barn-like finish. The interior measures approximately 8' x 8' and comes complete with an upper loft making this the perfect tree fort for sleepovers. Billy's Barn custom treehouse is just the place to kick back and take it slow, or let loose and have some fun.