Sun River Ranch, Montana, USA, $12,700,000.

Located 20 miles west of Augusta, this 3,000+ acre private retreat (1,539+ deeded) lies alongside 3.5 miles of the Sun River – on both sides – and offers a dramatic setting at the base of the Rocky Mountains, just minutes from foot and horseback access to an enormous wilderness complex. The views over Castle Reef and Scapegoat Mountain are breathtaking. The ranch is easily accessible from nearby Augusta (20 miles east) wi...