Oppressively hot and humid on the homefront? Head to the upper reaches of the North Atlantic near the Arctic Circle, to Iceland, which has more green grass than frozen tundra in summer. Considered one of the most golf-obsessed places in the world, with a participation rate of 10 percent, Iceland offers 65 courses, 17 of them 18-hole layouts and all accessible to visitors. There are headlands, seaside, and volcanic-based layouts evocative of Pebble Beach, Scotland, and Hawaii. Icelandic summers enable diehards to play virtually 24 hours a day.