1. Rolex Kentucky Three-Day Event

The Buzz -- One of the most highly rated equestrian competitions in the world (and the only four-star one in North America), this esteemed event tests the skills of both horse and rider and their interaction with each other. It's also a prelude to the rigors of Olympic and World Championship events. The three days include dressage (movement and obedience), cross-country (clearing obstacles at speed), and jumping. The combination provides a thorough test of ability, training, and showmanship; winning is a coveted prize, both in prestige and compensation ($200,000).