This event organized by the Northern Arizona Jaguar Club, based in Flagstaff. You must register by Saturday, April 8, in order to give the organizers a head count. Begin with a tour of the Mystery Castle, a place with odd history and intriguing architecture. Tour $10. Then head to lunch at The Farm at South Mountain, a verdant oasis in the desert with wonderful food. Lunch will be about $25 (including gratuity).