Shirley Caporaletti: Meander through wildflower-strewn meadows in valleys carved by rivers and glaciers, the hard, endless work of which makes everything look simply colossal. Here in Yosemite National Park, thunderous waterfalls tumble over sheer cliffs, ant-sized climbers scale the enormous granite domes of El Cap and Half Dome, and hikers walk beneath ancient groves of giant sequoias, the planet's biggest trees. Even the subalpine meadows of Tuolumne are magnificently vast. For the most sublime views, perch at Glacier Point on a full-moon night or drive the high country's dizzying Tioga Road in summer.