Dugan Dairy Farm - A glimpse of life on a dairy farm at the Dugan Dairy Farm, a family who pioneered farming in this part of the country. Mystery Castle - The story of the Mystery Castle, located in the foothills of South Mountain, is really a love story. The castle's builder, Boyce Luther Gulley, was diagnosed with tuberculosis in 1929, and left Seattle for Arizona, leaving his wife and three-year-old daughter Mary Lou behind. Buying an 80-acre mine, he built his castle by hand over 16 years, a lasting tribute to sand castles he remembered building with his daughter at the seashore. Upon his death in 1945 Mary Lou inherited the castle, which has 18 rooms, 13 fireplaces, numerous parapets and interesting curiosities in every room; her mother passed away in 1970, but she continues to live there today and also gives tours to help with the preservation of this Phoenix landmark. Thunderbird Balloon Classic - Balloon teams take part in the Thunderbird Balloon Classic, in which more than 100 brightly colored hot-air balloons fill the skies above Scottsdale in November.