In the spring of 1971, Bishop and Willard decided to use a large metal tank to supply the cabin with water. Since the metal cylinder was 40 feet tall, Bishop and Willard continued to build the walls of what was originally a small cabin. Friends and neighbors of the cabin would consistently joke with Bishop and Willard that they were building a castle. Eventually, Bishop decided to turn his original plans of a small cabin to a large castle.
Cliff Palace and Balcony House are ancient cliff dwellings that the ancestral Pueblo Indians inhabited in the 12th and 13th centuries. Located in Mesa Verde National Park, both are World Heritage Sites and National Monuments. Balcony House had forty-five rooms and two kivas (ovens), and it can only be accessed on ranger-guided tours. Tour participants must climb a thirty-two foot ladder and then crawl through a twelve-foot tunnel to access Balcony House.