Fodor's Expert Review Half Dome

Visitors' eyes are continually drawn to this remarkable granite formation that tops out at more than 4,700 feet above the valley floor. Despite its name, the dome is actually about three-quarters intact. You can hike to the top of it on an 8½-mile (one-way) trail whose last 400 feet must be ascended while holding onto a steel cable. Permits, available only by lottery, are required and are checked on the trail. (Call  877/444–6777 or visit  recreation.gov well in advance of your trip for details.) Back down in the valley, see Half Dome reflected in the Merced River by heading to Sentinel Bridge just before sundown. The brilliant orange light on Half Dome is a stunning sight.