By Brent Kelley
A double green, with fairways approaching from two different directions (top and bottom), at Carnoustie in Scotland.David Cannon / Getty Images
Double greens occasionally show up on parkland-style courses. But while they are not common anywhere, they are much more likely to be found in older, links courses of Great Britain and Ireland. On The Old Course at St. Andrews, for example, all but four holes end in double greens.