When we were in Colorado a few years ago we heard about a man building a castle about an hour west of Pueblo, so we took a drive one Saturday. Jim Bishop has been working on this structure since 1969 to the chagrin and amusement of his neighbors. Bishop Castle is open to the public most days with a requested donation. Lots of signs are posted to warn that it is a construction site and there is potential danger of getting hurt. It is quite fun to climb up and wander around.