St. Andrews (Old Course), St. Andrews, Fife, Scotland
The most unconventional design of all was golf's very first design. It was nature that carved these holes, back as far as the 1400s with the hand of man not interfering until hundreds of years later. Today, man and nature have conspired to craft the most unique championship course of all, with 14 holes sharing gigantic double greens, bunkers so infamous they have their own names and a public thoroughfare crossing the 18th on a road from which you cannot take relief. Still, its most head-scratching test is the par-4 Road Hole, a scorecard-wrecker of 495 yards that demands a drive directly over the Old Course Hotel, followed by a demonic approach. If played short, it runs into a frighteningly deep bunker. Hit it long and right and you'll find a pebbled path, a paved road and a stone wall, all of which are in play. In the 1800s, the Old Course actually played counter-clockwise, over the same holes, and once a year, the practice is revived. For many, this convention-defying course is also golf's greatest.