Mystery Castle is aPhoenix Point of Pride, named as such by the Phoenix Pride Commission. It was built by Boyce Luther Gulley, who abandoned his wife and daughter in Seattle, circa 1927, after learning that he had tuberculosis. He traveled to Phoenix and started building a “castle” that he had promised to his little girl once while constructing sand castles on a beach. Mary Lou Gulley was a toddler when her father unexpectedly left and never returned.