The main house at Casa de Shenandoah is where Newton and his family lived for decades. They wondered what exactly was behind those gilded walls, what exactly was Casa de Shenandoah — Wayne Newton’s massive 55-acre estate — really like inside? Up until recently that was a mystery left unsolved, but in September 2015, Mr. Las Vegas started tours of his estate and for the first time anyone could visit the property of this legendary showman. While in Las Vegas recently I made sure that I included a stop at the Casa de Shenandoah, excited to see a bit of kitsch and camp.