Behind the gates of Summerlin, a four-story estate of steel and concrete rises on 1.58 acres, with 31,000 square feet of living space, eight bedrooms and nine baths. Its private world includes a wine cellar, movie theater, full-service spa, golf simulator, three antique arcade rooms and a nightclub with its own bar and dance floor. An interior Zen garden brings calm to the center of the house, while the roof deck, guest quarters and four-edged infinity pool open to the desert sky. These photographs were used to market the property, which sold at a record price.

Las Vegas, Nevada