A few years ago I gave a lecture at Sam Houston State University in Huntsville Texas, home of the prison museum. Although I did not tour the facility, I did see the former prison rodeo, and the exterior walls of the famous "Walls Prison", and they were indeed tall. On the bright side, I was introduced to Dan Phillips, a sustainable pioneer in East Texas, and invited to his tree house and studio built from all salvaged materials. Below are a few photos of both, including a great ceiling made from remainder frame corners. Dan and his wife Marsha run Phoenix Commotion, working with communities to build these homes throughout Texas. It is a true jewel.Phoenix Commotion HERE